Standard Deviation (explained in 3 minutes) numiqo 2025-10-01 | Standard deviation is a statistical measure of the amount of variation or dispersion in a set of numerical data, indicating how spread out the values are from their mean (average). #statistics #datascience #dataanalysis #dataanalytics #research #thesis #stats #researcher #science #datatab #SPSS
Why two Formulas for Standard Deviation? When and Why use n vs. n−1. numiqo 2025-09-28 | Why are there two formulas for standard deviation?In this video, we break down the difference between dividing by n and dividing by n−1—in plain language with simple examples. You’ll learn when to use each formula and why the “n−1” version (Bessel’s correction) is standard when you work with samples.What you’ll learn:► Population vs. sample: what’s the difference and why it matters► Why estimating the mean “uses up” one degree of freedom► When to divide by n (population) vs. n−1 (sample)► Clear intuition for degrees of freedom► Tutorialnumiqo.com/tutorial/standard-deviation► E-BOOKnumiqo.com/statistics-book
Can we simply say that the standard deviation is the mean of the deviations from the mean? numiqo 2025-09-15 | Hi! In this video, we’ll ask: can we simply say that the standard deviation is the mean of the deviations from the mean, or is that an oversimplification?First, let’s start with something we can all agree on: The standard deviation measures how far values typically deviate from the mean. Ok, but what does that mean? What does typically mean?► Tutorialnumiqo.com/tutorial/standard-deviation► E-BOOKnumiqo.com/statistics-book
We will be renaming soon... numiqo 2025-09-10 | We’ve got big news! DATAtab is getting a new name.For reasons I’ll explain in a moment, we’ve decided to rename ourselves. So we’ll soon have a new name, but nothing will change for you—and of course our team will also remain the same. :)
ANCOVA (Analysis of Covariance): A Mix of ANOVA and Regression numiqo 2025-05-26 | ANCOVA (Analysis of Covariance) is a statistical method that combines ANOVA (Analysis of Variance) and regression. It compares the means of different groups while controlling for the effects of one or more continuous variables (called covariates) that might influence the outcome.In short:ANCOVA adjusts group means by removing the effect of covariates, helping you determine if group differences are still significant after accounting for those variables.► ANCOVA example Datanumiqo.com/statistics-calculator/ancova-calculator?example=ancova_edu► ANCOVA calcualtornumiqo.com/statistics-calculator/ancova-calculator► ANCOVA tutorialnumiqo.com/tutorial/ancova► F-distribution tablenumiqo.com/tutorial/f-distribution► E-BOOKnumiqo.com/statistics-book
xBar-R Chart (Statistical process control) numiqo 2025-05-05 | What is an xbar R Chart and how is it calculated? Xbar-R Charts are Control Charts used to monitor and control processes by tracking the performance of key variables over time. They help identify trends, shifts or any unusual patterns that might indicate a problem with the process.Xbar-R Chart online Makernumiqo.com/statistics-calculator/statistical-process-control/xbar-r-chart-maker► Control Chart Tutorialnumiqo.com/tutorial/control-charts0:00 What is an xbar R Chart?0:49 Example of an xbar R Chart.1:29 How to calculate an xbar R Chart?5:53 How to calculate a R Chart?5:53 Create an xbar R Chart online with Numiqo?
Paired Samples t-Test numiqo 2025-04-08 | What is a paired t-test, how is it calculated, and how are the results interpreted? A paired t-test is a hypothesis test that compares two paired samples.► E-BOOKnumiqo.com/statistics-book► Tutorialnumiqo.com/tutorial/paired-t-test► t-distribution and p-value Calculatornumiqo.com/tutorial/t-distribution► Example Data and t-Test Calculatornumiqo.com/statistics-calculator/hypothesis-test/paired-t-test-calculator?example=before_after
Multicolinarity - An Easy and Clear Beginner’s Guide numiqo 2025-02-25 | Multicollinearity in regression occurs when two or more independent variables are highly correlated with each other, making it difficult to determine the individual effect of each predictor on the dependent variable. It can inflate the variance of coefficient estimates and make the regression results unstable and difficult to interpret.► E-BOOKnumiqo.com/statistics-book► Regression Calculatornumiqo.com/statistics-calculator/regression► Playlist:1) What is a Regression Analysis? youtu.be/-JTKf-a1JpU2) What is Simple Linear Regression?youtu.be/gPfgB4ew3RY3) What is Multiple Linear Regression?youtu.be/i3IadpjctWg4) What is Logistic Regression?youtu.be/Ax5kqLHls-I► Tutorials:Regression Analysisnumiqo.com/tutorial/regression Linear Regressionnumiqo.com/tutorial/linear-regressionLogistic Regressionnumiqo.com/tutorial/logistic-regression
Wilcoxon Test (Wilcoxon signed rank test) Simply explained numiqo 2025-02-13 | The Wilcoxon test is a non-parametric statistical test used to compare paired samples when the data is not normally distributed. The Wilcoxon signed rank test is the non-parametric counterpart to the paired t-test.Wilcoxon Test Calculatornumiqo.com/statistics-calculator/hypothesis-test/wilcoxon-test-calculatorWilcoxon Test Example Datanumiqo.com/statistics-calculator/hypothesis-test/wilcoxon-test-calculator?example=Wilcoxon_test_simple_examplee-Booknumiqo.com/statistics-bookTutorialnumiqo.com/tutorial/wilcoxon-testStandard Normal Distribution (z-Table)numiqo.com/tutorial/z-distribution
Best Data Science YouTube Channels - Your Recommendations numiqo 2025-02-05 | Discover the best YouTube channels to learn Data Science! 🚀 Whether you're a beginner or an expert, these channels offer top-notch tutorials, insights, and industry trends to boost your skills. ► E-BOOKnumiqo.com/statistics-book► DATAtab online Statistical Softwarenumiqo.com/statistics-calculator/regression3Blue1Brown@3blue1brownSerrano.Academy@SerranoAcademy Math and Science@MathAndScience Dr Nic's Maths and Stats@DrNic
What are Dummy Variables in Regression? numiqo 2025-02-03 | Dummy variables in regression are artificial variables created to represent categorical data numerically. They take binary values (0 or 1) to indicate the presence or absence of a particular category. Since regression models require numerical input, dummy variables allow categorical variables (e.g., gender, region, or product type) to be incorporated into the analysis.► E-BOOKnumiqo.com/statistics-book► Example datanumiqo.com/statistics-calculator/regression/linear-regression-calculator?example=FuelConsumption► Regression Calculatornumiqo.com/statistics-calculator/regression/linear-regression-calculator► Playlist:1) What is a Regression Analysis? youtu.be/-JTKf-a1JpU2) What is Simple Linear Regression?youtu.be/gPfgB4ew3RY3) What is Multiple Linear Regression?youtu.be/i3IadpjctWg4) What is Logistic Regression?youtu.be/Ax5kqLHls-I► Tutorials:Regression Analysisnumiqo.com/tutorial/regression Linear Regressionnumiqo.com/tutorial/linear-regressionLogistic Regressionnumiqo.com/tutorial/logistic-regression
Statistics - A Full Lecture to learn Data Science (2025 Version) numiqo 2025-01-29 | Welcome to our comprehensive and free statistics tutorial (Full Lecture)! In this video, we'll explore essential tools and techniques that power data science and data analytics, helping us interpret data effectively. You'll gain a solid foundation in key statistical concepts and learn how to apply powerful statistical tests widely used in modern research and industry. From descriptive statistics to regression analysis and beyond, we'll guide you through each method's role in data-driven decision-making. Whether you're diving into machine learning, business intelligence, or academic research, this tutorial will equip you with the skills to analyze and interpret data with confidence. Let's get started!► EBOOK numiqo.com/statistics-book► Statistics Calculatornumiqo.com/statistics-calculator/descriptive-statistics► Tutorialsnumiqo.com/tutorial/descriptive-inferential-statistics0:00 Intro1:52 Basics of Statistics21:56 Level of Measurement34:56 t-Test51:18 ANOVA (Analysis of Variance)1:05:36 Two-Way ANOVA1:21:51 Repeated Measures ANOVA1:36:22 Mixed-Model ANOVA1:48:04 Parametric and non parametric tests1:55:49 Test for normality2:03:56 Levene's test for equality of variances2:08:11 Mann-Whitney U-Test2:17:06 Wilcoxon signed-rank test2:28:30 Kruskal-Wallis-Test2:38:45 Friedman Test2:49:12 Chi-Square test2:59:46 Correlation Analysis3:27:07 Regression Analysis4:35:31 k-means clustering4:44:02 Confidence interval
Best YouTube Channels to learn Statistics numiqo 2025-01-27 | Looking for the best YouTube channels to learn statistics in a fun and easy way? In this video, I share my top picks—from clear and simple explanations to engaging and entertaining lessons. Whether you're a beginner or diving into advanced topics like regression, ANOVA, or machine learning, these channels have you covered!► E-BOOKnumiqo.com/statistics-book► Numiqo online Statistical Softwarenumiqo.com/statistics-calculator/regression
Regression Analysis | Full Course 2025 numiqo 2025-01-21 | This comprehensive YouTube course covers Regression Analysis from the ground up, helping you master the theory, application, and real-world implementation of regression models. Whether you're a beginner looking to understand the basics or an advanced learner seeking to refine your skills, this course will equip you with everything you need to know about regression techniques, statistical modeling, and predictive analytics.► E-BOOKnumiqo.com/statistics-book► Regression Analysis Calculatornumiqo.com/statistics-calculator/regression► Example Data Simple Linear Regression--------------------------------------------------------------numiqo.com/statistics-calculator/regression/linear-regression-calculator?example=regression_medical► Example Data Multiple Linear Regression--------------------------------------------------------------numiqo.com/statistics-calculator/regression/linear-regression-calculator?example=regression_medical► Example Data Logistic Regression--------------------------------------------------------------numiqo.com/statistics-calculator/regression/logistic-regression-calculator?example=Medical_example_logistic_regressionnumiqo.com/statistics-calculator/regression/logistic-regression-calculator?example=logReg► Tutorials:--------------------------------------------------------------Regression Analysisnumiqo.com/tutorial/regressionLinear Regressionnumiqo.com/tutorial/linear-regressionLogistic Regressionnumiqo.com/tutorial/logistic-regression0:00 Intro1:19 What is Regression Analysis?7:58 What is Simple Linear Regression?21:45 What is Multiple Linear Regression?47:24 What is Logistic Regression?
Logistic Regression - Simply explained in 2 min numiqo 2025-01-19 | Logistic regression is a statistical and machine learning technique used for binary classification problems (i.e., when the target variable has only two possible outcomes, like 0 or 1, Yes or No, Spam or Not Spam).#statistics #DataScience #CorrelationCoefficient #MathExplained #LinearRelationship #DataAnalysis #LearnStatistics #MathTutorial #DataVisualization
Regression Analysis - Linear, Multiple and Logistic Regression numiqo 2025-01-16 | Regression analysis is a set of statistical methods used for the estimation of relationships between a dependent variable and one or more independent variables.#statistics #DataScience #CorrelationCoefficient #MathExplained #LinearRelationship #DataAnalysis #LearnStatistics #MathTutorial #DataVisualization
Logistic Regression: An Easy and Clear Beginner’s Guide numiqo 2025-01-14 | Logistic regression is a statistical method used for modeling the relationship between a dependent variable and one or more independent variables. It is particularly suited for classification problems, where the dependent variable is categorical. In this Video we will discuss what a Logistic Regression is, how it is calculated and most importantly, how the results are interpreted.► E-BOOKnumiqo.com/statistics-book► Example data 1numiqo.com/statistics-calculator/regression/logistic-regression-calculator?example=Medical_example_logistic_regression► Example Data 2numiqo.com/statistics-calculator/regression/logistic-regression-calculator?example=logReg► Online Logistic Regression Calculatornumiqo.com/statistics-calculator/regression► Playlist:--------------------------------------------------------------1) What is a Regression Analysis? youtu.be/-JTKf-a1JpU2) What is Simple Linear Regression?youtu.be/gPfgB4ew3RY3) What is Multiple Linear Regression?youtu.be/-JTKf-a1JpU4) What is Logistic Regression?This Video► Tutorials:-------------------------------------------------------------------Regression Analysisnumiqo.com/tutorial/regression Linear Regressionnumiqo.com/tutorial/linear-regressionLogistic Regressionnumiqo.com/tutorial/logistic-regression00:00 What is a Logistic Regression? 6:17 Interpreted the results of a Logistic Regression12:11 Odds ratio in Logistic Regression21:13 ROC Curve
Hierarchical Cluster Analysis - Simply Explained numiqo 2025-01-12 | Hierarchical clustering, also known as hierarchical cluster analysis, is an algorithm that groups similar objects into groups called clusters.#Statistics #DataScience #CorrelationCoefficient #MathExplained #LinearRelationship #DataAnalysis #LearnStatistics #MathTutorial #DataVisualization
Multiple Linear Regression: An Easy and Clear Beginner’s Guide numiqo 2025-01-08 | Multiple Linear Regression is a statistical technique used to model the relationship between one dependent variable and two or more independent variables. It extends simple linear regression by considering multiple predictors, allowing for more accurate predictions and insights into how each independent variable impacts the dependent variable. ► E-BOOKnumiqo.com/statistics-book► Example datanumiqo.com/statistics-calculator/regression/linear-regression-calculator?example=regression_medical► Regression Calculatornumiqo.com/statistics-calculator/regression/linear-regression-calculator► Playlist:1) What is a Regression Analysis? youtu.be/-JTKf-a1JpU2) What is Simple Linear Regression?youtu.be/gPfgB4ew3RY3) What is Multiple Linear Regression?This Video4) What is Logistic Regression?youtu.be/Ax5kqLHls-I► Tutorials:Regression Analysisnumiqo.com/tutorial/regression Linear Regressionnumiqo.com/tutorial/linear-regressionLogistic Regressionnumiqo.com/tutorial/logistic-regression00:00 What is a Multiple Linear Regression?1:22 What is the difference between Simple Linear and Multiple Linear Regression?2:25 What is the equation of Multiple Linear Regression?4:10 What are the assumptions of a Multiple Linear Regression?12:31 Example for a Multiple Linear Regression.12:58 How to calculate a Multiple Linear Regression?13:28 How to interpret a Multiple Linear Regression?14:00 How to interpret the Regression Coefficients?16:28 How to interpret the p-Value in a Multiple Linear Regression?17:05 How to interpret R and R2 in a Multiple Linear Regression?20:27 What are Dummy Variables?25:39 What is a Logistic Regression?
Mann–Whitney U test numiqo 2025-01-07 | The Mann–Whitney U test (also known as the Wilcoxon rank-sum test) is a non-parametric statistical test used to compare two independent groups to determine whether their population distributions differ. It is often used as an alternative to the independent samples t-test when the assumption of normality in the data cannot be satisfied.#Statistics #DataScience #CorrelationCoefficient #MathExplained #LinearRelationship #DataAnalysis #LearnStatistics #MathTutorial #DataVisualization
Spearmans rank correlation coefficient numiqo 2025-01-06 | The Spearman's rank correlation coefficient is a non-parametric measure of the strength and direction of the association between two ranked variables. It assesses how well the relationship between two variables can.#Statistics #DataScience #CorrelationCoefficient #MathExplained #LinearRelationship #DataAnalysis #LearnStatistics #MathTutorial #DataVisualization
Pearson correlation coefficient #Statistics #DataScience #DataAnalysis numiqo 2025-01-04 | Pearson Correlation Coefficient! 📊 Discover how this powerful metric measures the strength and direction of linear relationships between two variables. Perfect for students, data enthusiasts, and anyone diving into analytics. Learn when to use it, how to calculate it, and what those results really mean! 💡#PearsonCorrelation #Statistics #DataScience #CorrelationCoefficient #MathExplained #LinearRelationship #DataAnalysis #LearnStatistics #MathTutorial #DataVisualization
Simple Linear Regression: An Easy and Clear Beginner’s Guide numiqo 2024-12-08 | In this video, you’ll learn the basics of Simple Linear Regression: what it is, how it works, and why it’s useful. We’ll walk through the key concepts, show you how to calculate the regression equation step by step, and discuss the main assumptions you need to check for a valid model.► E-BOOKnumiqo.com/statistics-book► Example datanumiqo.com/statistics-calculator/regression/linear-regression-calculator?example=simple_linear_regression► Linear Regression Calculatornumiqo.com/statistics-calculator/regression/linear-regression-calculator► Playlist:1) What is a Regression Analysis? youtu.be/-JTKf-a1JpU2) What is Simple Linear Regression?This Video3) What is Multiple Linear Regression?youtu.be/i3IadpjctWg4) What is Logistic Regression?youtu.be/Ax5kqLHls-I► Regression Analysis Calculatornumiqo.com/statistics-calculator/regression► Tutorials:Regression Analysisnumiqo.com/tutorial/regressionLinear Regressionnumiqo.com/tutorial/linear-regressionLogistic Regressionnumiqo.com/tutorial/logistic-regression00:00 What is a Simple Linear Regression?00:53 Example for a Simple Linear Regression.1:36 How to calculate a Simple Linear Regression?3:04 What is the slope and the intercept?7:05 How to calculate a Simple Linear Regression with DATAtab?8:01 How do you interpret the p-value?9:23 What are the assumptions of a Simple Linear Regression?13:32 Multiple Linear Regression
Regression Analysis: An Easy and Clear Beginner’s Guide numiqo 2024-11-26 | In this video on Regression Analysis, we’ll cover Simple Linear Regression, Multiple Linear Regression, and Logistic Regression.► E-BOOKnumiqo.com/statistics-book► Playlist:1) What is a Regression Analysis?This Video2) What is Simple Linear Regression?youtu.be/gPfgB4ew3RY3) What is Multiple Linear Regression?youtu.be/i3IadpjctWg4) What is Logistic Regression?youtu.be/Ax5kqLHls-I► Regression Analysis Calculatornumiqo.com/statistics-calculator/regression► Tutorials:Regression Analysisnumiqo.com/tutorial/regressionLinear Regressionnumiqo.com/tutorial/linear-regressionLogistic Regressionnumiqo.com/tutorial/logistic-regression
Mastering Odds Ratios in Logistic Regression – A Step-by-Step Guide numiqo 2024-11-11 | This Video is about odds ratios in logistic regression. If you’ve ever wondered how to interpret odds ratios, why they’re so crucial in logistic regression, or just want a better understanding of what they actually mean, this video is for you! We’ll start with a quick overview of logistic regression, then dive into what odds are and how they work. From there, we'll break down the odds ratio, and finally, we’ll bring it all together to see what the odds ratio means within the context of logistic regression.► E-BOOKnumiqo.com/statistics-book► Example Data Logistic Regressionnumiqo.com/statistics-calculator/regression/logistic-regression-calculator?example=logReg► Online Logistic Regression Calculatornumiqo.com/statistics-calculator/regression►Tutorial Logistic Regressionnumiqo.com/tutorial/logistic-regression► Video Logistic Regressionyoutu.be/C5268D9t9Ak00:00 Odds Ratios in Logistic Regression00:31 What is a Logistic Regression?01:52 What are Odds?03:14 What are Odds Ratios?06:04 How to interpret Odds Ratios in a Logistic Regression?
The New Statistics: A Modern Approach to Data Analysis numiqo 2024-10-24 | Is there a new way to do statistics? Yes, there is! In this video, we'll dive into modern solutions to tackle the challenges of traditional methods. Specifically, we'll focus on practical alternatives to overcome the 'p-value dilemma,' a topic we explored in our previous video, Is the p-value dead? We will focus on the book “New Statistics” by Geoff Cumming and Robert Calin-Jageman.► E-BOOKnumiqo.com/statistics-book► Book: Introduction to the New Statisticsamzn.to/4hkdAdC► Numiqonumiqo.com0:00 What is the New Statistics Approach?2:00 What are the 3 main problems of empirical research?7:24 What are the 4 solutions?14:58 Example and Conclusion
Learn Correlation Analysis Fast – 90% of What You Need in Under 11 Minutes numiqo 2024-10-14 | In this video, we dive into the concept of correlation – a powerful statistical tool used to measure the relationship between two variables. Whether you’re analyzing data for school, work, or just curious about how trends are connected, this video explains everything you need to know!► Online Correlation Calculator numiqo.com/statistics-calculator/correlation► Tutorial Correlation Analysisnumiqo.com/tutorial/pearson-correlation► E-BOOKnumiqo.com/statistics-book
ANOVA - A Full Lecture to learn Analysis of Variance numiqo 2024-10-08 | Welcome to this full and free course on analysis of variance, or ANOVA for short. In this video, we'll explore what analysis of variance actually is and why you need it. We’ll take a deep dive into the different types of ANOVA, helping you understand when and how to use each one. We'll start with the basics of the One-Way ANOVA, then move on to the more advanced Two-Way ANOVA, ANOVA with repeated measures, and the powerful Mixed Model ANOVA.► EBOOKnumiqo.com/statistics-book► ANOVA Calculatornumiqo.com/statistics-calculator/hypothesis-test/anova0:00 Introduction1:10 One-Way ANOVA14:25 Two-Way ANOVA30:46 ANOVA with repeated measures45:06 Mixed Model ANOVA
Confidence Interval: The right and wrong way to understand them. numiqo 2024-10-02 | In this video, we'll uncover the true definition of a confidence interval, clear up some common misconceptions, and explain the difference between the incorrect and correct interpretations. In fact, published studies have shown that professional scientists frequently misinterpret confidence intervals.► EBOOKnumiqo.com/statistics-book► Statistics Calculatornumiqo.com/statistics-calculator/descriptive-statistics
Types of Data in Statistics - Nominal, Ordinal, Interval, and Ratio numiqo 2024-09-30 | This video is about types of data in statistics.In statistics, "types of data" are generally referred to as "levels of measurement". We're going to explore the four levels of measurement —Nominal, Ordinal, Interval, and Ratio. Each level gives us important information about the variable and supports different types of statistical analysis.► Statistics Calculatornumiqo.com/statistics-calculator/descriptive-statistics► EBOOKnumiqo.com/statistics-book► Tutorialnumiqo.com/tutorial/level-of-measurement0:00 What are types of data in statistics?2:58 What are nominal variables?4:20 What are ordinal variables?5:21 What are metric variables?5:59 Example of nominal, ordinal and metric data.8:08 What is the difference between interval and ratio data10:37 Exercise on Levels of Measurement
One-Way-ANOVA #maths #pvalue #statistics #datascience #dataanalysis #research #thesis #stats numiqo 2024-09-25 | This video is about analysis of variance, or ANOVA for short.
One-Way ANOVA [Analysis of Variance] simply explained numiqo 2024-09-25 | This video is about analysis of variance, or ANOVA for short. We discuss what an ANOVA is and why you need it. We look at the hypotheses and the prerequisites for an analysis of variance, and I show you how to calculate an ANOVA and what the equations behind an ANOVA are. Finally, we discuss how to interpret the results and take a look at the post-hoc test. First of all, there are different types of analysis of variance. The simplest and most common form is the one-way analysis of variance. And this video is all about the one-way analysis of variance.► EBOOKnumiqo.com/statistics-book► ANOVA statistics calculatornumiqo.com/statistics-calculator/hypothesis-test/anova► Tutorialnumiqo.com/tutorial/one-factorial-anova► F-distribution tablenumiqo.com/tutorial/f-distribution► Video Test for Normalitynumiqo.com/AVketBmpUTE► Video Levene's test numiqo.com/x51GDTiPIfI► Video Kruskal-Wallis-Testnumiqo.com/l86wEhUzkY4► Video Two Way ANOVAnumiqo.com/7OY0DdFyJBg00:00 What is an analysis of variance?01:53 What are the hypotheses in an analysis of variance?02:29 What are the assumptions of an analysis of variance?05:55 How is an ANOVA calculated?12:16 How is an analysis of variance calculated with DATAtab?13:00 What is a post-hoc test?
80% of Regression Analysis Basics in under 18 Minutes [Simple, Multiple and Logistic Regression] numiqo 2024-09-08 | But have you ever wondered why your data keeps crossing the line? Today we’re diving into simple linear, multiple linear, and logistic regression, and it will be entertaining- I promise!► EBOOK numiqo.com/statistics-book► Example datanumiqo.com/statistics-calculator/regression/linear-regression-calculator?example=Ice_Cream_Sales► Regression Analysis Calculatornumiqo.com/statistics-calculator/regression► Regression Analysis | Full free Courseyoutu.be/0m-rs2M7K-Y0:00 Intro0:27 Simple linear Regression6:40 Multiple linear Regression11:57 Logistic Regression14:57 Examples of Regression Analysis
When not to use the t-test! 3 Scenarios Where the T-Test Fails... numiqo 2024-08-20 | Are you relying on the t-test in every situation? It might be time to rethink that approach! In this video, we dive into three specific cases where the t-test can lead you astray, and explain why alternative methods are better suited for these scenarios. Whether you're in research, data analysis, or just curious about statistical techniques, understanding when not to use the t-test is crucial.► EBOOK numiqo.com/statistics-book► t-Test Calculatornumiqo.com/statistics-calculator/hypothesis-test/t-test?example=drug_a_b► Equivalence and non-inferiority Calculatornumiqo.com/statistics-calculator/equivalence-non-inferiority► Normality test Videoyoutu.be/AVketBmpUTE► Mann-Whitney U Test Videoyoutu.be/LcxB56PzylA0:00 Intro0:18 What is a t-Test?4:05 When not to use the t-test
Control Charts simply explained - Statistical process control - Xbar-R Chart, I-MR Chart,... numiqo 2024-08-13 | In this video, we delve into the fundamentals of Control Charts (Statistical Process Control - SPC), a vital tool in quality control and process management. Learn how to monitor processes, detect variations, and maintain consistent quality over time.We'll cover:What Control Charts are and why they are essential.Different types of Control Charts (Xbar-R Chart, I-MR Chart, p Chart, np Chart, c Chart and u Chart).How to create and interpret Control Charts.Real-world examples of using Control Charts in various industries.► EBOOK numiqo.com/statistics-book► Control Chart Calculatornumiqo.com/statistics-calculator/statistical-process-control/xbar-r-chart-maker?example=xbarChart► Control Chart Tutorialnumiqo.com/tutorial/control-charts0:00 What are Control Charts?1:04 What is a Xbar-R Chart?5:05 What is an I-MR Chart?6:34 What is a np Chart and a p Chart?9:08 What is a c Chart and a u Chart?
Why the p-Value fell from Grace: A Deep Dive into Statistical Significance numiqo 2024-08-04 | In this video, we dive deep into the contentious world of the p-Value, a fundamental concept in statistical analysis. 📊The p-Value has been a critical tool for researchers across various fields, helping them determine the significance of their results. However, it has also been the subject of intense debate and scrutiny. In this video, we break down the pros and cons of using the p-Value in scientific research.We'll cover:✅ The benefits and strengths of the p-Value in hypothesis testing and data analysis.⚠️ Common pitfalls and criticisms associated with the p-Value.🔍 Examples where the p-Value has been both useful and misleading.🔄 Alternative methods and metrics to consider for statistical significance.🤔 How to use the p-Value correctly and avoid common mistakes.Whether you're a student, a researcher, or just someone interested in the intricacies of data analysis, this video will provide a balanced perspective on the p-Value, highlighting its advantages and limitations.Join us as we explore the practical applications and the controversies surrounding the p-Value, helping you make more informed decisions in your research and data analysis endeavors.► EBOOK numiqo.com/statistics-book► Statistics Calculatornumiqo.com/statistics-calculator/descriptive-statistics► Tutorialsnumiqo.com/tutorial/descriptive-inferential-statisticsSources:- Lakens, D. (2021): The Practical Alternative to the p Value Is the Correctly Used p Value. Perspectives on Psychological Science, 16(3), 639-648.- Trafimow , D.& Marks, M. ( 2015 ): Editorial . Basic and Applied Social Psychology , 37(1), 1-2 .- Lu, Ying & Belitskaya-Levy (2015): The debate about p-values. Shanghai Archives of Psychiatry. 27(6): 381–385.- Hirschauer, Norbert (2022): Unanswered Questions in the p-value debate. Significance, 19(3), 42-44.#Statistics #pValue #DataAnalysis #ResearchMethods #HypothesisTesting
Statistics - A Full Lecture to learn Data Science numiqo 2024-05-02 | Welcome to our full and free tutorial about statistics (Full-Lecture). We will uncover the tools and techniques that help us make sense of data. This video is designed to guide you through the fundamental concepts and some of the most powerful statistical tests used in research today. From the basics of descriptive statistics to the complexities of regression and beyond, we'll explore how each method fits into the bigger picture of data analysis. ► EBOOK numiqo.com/statistics-book► Statistics Calculatornumiqo.com/statistics-calculator/descriptive-statistics► Tutorialsnumiqo.com/tutorial/descriptive-inferential-statistics0:00 Intro1:25 Basics of Statistics21:29 Level of Measurement34:26 t-Test50:53 ANOVA (Analysis of Variance)59:55 Two-Way ANOVA1:16:47 Repeated Measures ANOVA1:31:15 Mixed-Model ANOVA1:42:56 Parametric and non parametric tests1:50:37 Test for normality1:58:41 Levene's test for equality of variances2:02:54 Non-parametric Tests2:03:29 Mann-Whitney U-Test2:11:46 Wilcoxon signed-rank test2:22:03 Kruskal-Wallis-Test2:32:01 Friedman Test2:42:30 Chi-Square test2:53:02 Correlation Analysis3:20:19 Regression Analysis4:06:45 k-means clustering
Levels of Measurement - Nominal, Ordinal, Interval and Ratio numiqo 2024-04-25 | In this video, we're going to explore the four levels of measurement —Nominal, Ordinal, Interval, and Ratio. Each level gives us important information about the variable and supports different types of statistical analysis.► Statistics Calculatornumiqo.com/statistics-calculator/descriptive-statistics► EBOOKnumiqo.com/statistics-book► Tutorialnumiqo.com/tutorial/level-of-measurement0:00 What are Levels of Measurement?2:37 What are nominal variables?3:59 What are ordinal variables?5:00 What are metric variables?5:38 Example of nominal, ordinal and metric data.7:47 What is the difference between interval and ratio data10:16 Exercise on Levels of Measurement
Repeated Measures ANOVA (Analysis of Variance) - Simply explained numiqo 2024-04-17 | This video is about repeated measures ANOVA (Analysis of Variance), we go through the following questions: What is repeated measures analysis of variance? What are the hypotheses and assumptions? How is an analysis of variance with repeated measures calculated? How are the results interpreted? What is a post hoc test and how do I interpret it correctly? An analysis of variance with repeated measures tests whether there is a statistically significant difference between three or more dependent samples.► ANOVA calculatornumiqo.com/statistics-calculator/hypothesis-test/repeated-measures-anova-calculator► Example data setnumiqo.com/statistics-calculator/hypothesis-test/repeated-measures-anova-calculator?example=ANOVA_with_repeated_measurement► p-value calculator for F-distributionnumiqo.com/tutorial/f-distribution► EBOOK numiqo.com/statistics-book► Video test for normal distributionyoutu.be/AVketBmpUTE0:00 What is a repeated measures analysis of variance (ANOVA with repeated measures)?3:05 What are the hypotheses?4:06 What are the assumptions? 5:11 How is an analysis of variance with repeated measures calculated and interpreted? 9:06 What are the formulas for calculating repeated measures ANOVA by hand?
z-Score, z-Standardization, Standard Normal Distribution, z-Distribution Table - Simply explained numiqo 2024-03-19 | In this video, we discuss what the z-Score is, how z-standardisation (z-transformation) works and what the standard normal distribution is. I will also show you what the z-distribution table (standard normal distribution table) is and what you need it for. For a better understanding, let's go through the individual points using a simple example.► EBOOK numiqo.com/statistics-book► z-distribution tablenumiqo.com/tutorial/z-distribution0:00 What is the z-Score?3:23 What is z-standardisation (z-transformation)?5:38 What is the standard normal distribution?6:39 What is the z-distribution table (standard normal distribution table)?9:28 Example of z-standardisation (z-transformation)10:17 z-Standardisation: Make values measured in different ways comparable.11:57 What are the assumptions for z-standardisation and the z-distribution table?
What is the difference between parametric and nonparametric hypothesis testing? numiqo 2024-03-10 | Hi, in this video I explain the difference between parametric and non-parametric tests! You want to calculate a hypothesis test, but don't know exactly what the difference is between a parametric and non-parametric test and are wondering when to use which test. If you want to calculate a hypothesis test, you must first check the assumptions for the respective hypothesis test. One of the most common assumption is that the data used must be normally distributed. Put simply, if your data is normally distributed, parametric tests are used, e.g. the t-test, analysis of variance or pearson correlation. If your data is not normally distributed, non-parametric tests are used, e.g. the Mann-Whitney U test or the Spearman correlation.► Statistics calculatornumiqo.com/statistics-calculator/hypothesis-test► EBOOK numiqo.com/statistics-book► Tutorial numiqo.com/tutorial/parametric-and-non-parametric-tests0:00 What are parametric and non-parametric hypothesis tests?1:54 Pearson correlation vs. the Spearman correlation 4:00 t-test for independent samples vs. Mann Whitney U test 5:43 List of parametric and non-parametric hypothesis tests.6:17 Calculating parametric and non-parametric hypothesis tests with DATAtab
What is Descriptive Statistics? A Beginners Guide to Descriptive Statistics! numiqo 2024-03-05 | Descriptive statistics is a branch of statistics that involves summarizing and organizing data in a way that it can be easily understood. This statistical method focuses on describing and understanding the features of a specific data set by providing summaries about the sample and measures of the data. The main goal is to present a large amount of data in a clear and concise manner for easy interpretation, without making any conclusions beyond the data itself or inferring any patterns that may apply to a larger population.► Statistics Calculatornumiqo.com/statistics-calculator/descriptive-statistics► EBOOKnumiqo.com/statistics-book► Tutorialnumiqo.com/tutorial/descriptive-inferential-statistics---- Videos ---► Standard Deviation and Varianceyoutu.be/5wJUUgnMGWA► Box-Plotyoutu.be/INSIyaZUXIY► Violin Plotyoutu.be/Rw00VmP--qk► Raincloud Plotyoutu.be/ituWaiJu3nI0:00 What is Descriptive Statistics?1:05 What are Measures of Central Tendency?2:51 What are Measures of Dispersion?6:06 What are Frequency table and Contingency table?8:07 Charts in Descriptive Statistics
What is a hypothesis test? A beginners guide to hypothesis testing! numiqo 2024-02-26 | Hypothesis testing is used to determine whether there is enough evidence in a sample of data to infer that a certain condition is true for the entire population. Therefore, it's a method to test an assumption or theory about a parameter of a population based on a sample.► Hypothesis test calculatornumiqo.com/statistics-calculator/hypothesis-test► EBOOKnumiqo.com/statistics-book► Tutorialnumiqo.com/tutorial/hypothesis-testing
What is Statistics? A Beginners Guide to Statistics (Data Analytics)! numiqo 2024-02-18 | If you want to finally understand statistics, this is the place to be! After this video, you will know what statistics is, what descriptive statistics is and what inferential statistics is. Statistics is the science of collecting, analyzing, interpreting, and presenting data. Statistics is integral to various fields, including business, economics, engineering, medicine, social sciences, and natural sciences, among others. It encompasses a wide range of techniques and processes for dealing with data, including:Descriptive Statistics: This branch focuses on summarizing and describing the features of a dataset through measures such as mean, median, mode, and standard deviation, as well as through graphs and charts. It aims to provide a clear overview of the data without making inferences about a larger population.Inferential Statistics: This branch uses samples of data to make generalizations or predictions about a larger population. It includes hypothesis testing, confidence intervals, regression analysis, and analysis of variance. Inferential statistics allows researchers to draw conclusions beyond the immediate data, estimating population parameters and testing hypotheses.► Statistics Calculatornumiqo.com/statistics-calculator/descriptive-statistics► EBOOKnumiqo.com/statistics-book► Tutorialnumiqo.com/tutorial/descriptive-inferential-statistics► Example datasetnumiqo.com/statistics-calculator/descriptive-statistics/create-frequency-table-and-crosstab?example=descriptive---- Videos ---► Standard Deviation and Varianceyoutu.be/5wJUUgnMGWA► Box-Plotyoutu.be/INSIyaZUXIY► Violin Plotyoutu.be/Rw00VmP--qk► Raincloud Plotyoutu.be/ituWaiJu3nI► t-Testyoutu.be/VekJxtk4BYM0:00 What is Statistics?2:24 What is Descriptive Statistics?12:12 What is Inferential Statistics?
Fractional Factorial Design (DoE) Simply explained numiqo 2024-02-07 | What is a Fractional Factorial Design? A fractional factorial design is a type of experimental design used to analyse the effects of several factors (or variables) on a response variable. What is the difference with a full factorial design? In a full factorial design, every possible combination of factor levels is examined. Conversely, a fractional factorial design strategically excludes certain combinations. This reduce the number of experiments while still capturing essential information about the system's behavior.► Fractional Factorial Design Calculatornumiqo.com/statistics-calculator/design-of-experiments/fractional-factorial-design-calculator► EBOOKnumiqo.com/statistics-book► Fractional Factorial Design Tutorialnumiqo.com/tutorial/fractional-factorial-design
Between-Subject Design vs. Within-Subject Design numiqo 2024-02-05 | What is the difference between a Between-subject Design and a Within-subject Design? And why is it important to know the difference? This is what we discuss in this video!► Hypothesis test calculatornumiqo.com/statistics-calculator/hypothesis-test► EBOOKnumiqo.com/statistics-book► Example datanumiqo.com/statistics-calculator/hypothesis-test/mixed-model-anova-calculator?example=two_factorial_anova_with_repeated_measures
Mixed Model ANOVA (Analysis of Variance) Simply explained numiqo 2024-01-30 | What is a Mixed Model ANOVA? What are the hypotheses and assumptions? And how to interpret the results of a Mixed Model ANOVA? This is what we discuss in this video!A Mixed Model ANOVA is a statistical method used to analyze data that involve both between-subjects factors and within-subjects factors.► Mixed Model ANOVA example datanumiqo.com/statistics-calculator/hypothesis-test/mixed-model-anova-calculator?example=two_factorial_anova_with_repeated_measures► Mixed Model ANOVA Calculatornumiqo.com/statistics-calculator/hypothesis-test/mixed-model-anova-calculator► EBOOKnumiqo.com/statistics-book0:00 What is a Mixed Model ANOVA?3:50 What are the hypotheses in a Mixed Model ANOVA?4:45 What are the assumptions in a Mixed Model ANOVA?6:40 Example of a Mixed Model ANOVA.7:26 How to calculate and interpret a Mixed Model ANOVA?
Full Factorial Design (DoE - Design of Experiments) Simply explained numiqo 2024-01-25 | In this video, we discuss what a full factorial design is, how to create it and how to analyze the results obtained. A full factorial design is a systematic method for examining the effects and possible interactions of multiple factors on a response variable.► Full Factorial Design DoE Calculatornumiqo.com/statistics-calculator/design-of-experiments/full-factorial-design-calculator► EBOOKnumiqo.com/statistics-book► Full Factorial Design Tutorialnumiqo.com/tutorial/full-factorial-design0:00 What is a full factorial design?2:24 How can the number of runs needed be estimated?5:38 How can a full factorial design help to reduce the number of runs?9:06 Creating a full factorial design online.10:51 Analyse and interpret a full factorial design.
Design of Experiments (DoE) simply explained numiqo 2024-01-22 | In this video, we discuss what Design of Experiments (DoE) is. We go through the most important process steps in a DoE project and discuss how a DoE helps you to reduce the number of experiments. We then discuss how you can estimate the number of experiments needed and we go through the most common experimental designs: Full factorial design, Fractional factorial design, Plackett-Burman Design, Box-Behnken Design, Central Composite Design.► DoE Calculatornumiqo.com/statistics-calculator/design-of-experiments► EBOOKnumiqo.com/statistics-book► DoE Tutorialnumiqo.com/tutorial/design-of-experiments0:00 What is design of experiments?3:12 Steps of DOE project5:56 Types of Designs6:26 Why design of experiments and why do you need statistics?6:47 How are the number of experiments in a DoE estimated?9:26 How can DoE reduce the number of runs?10:09 What is a full factorial design?12:04 What is a fractional factorial design?15:27 What is the resolution of a fractional factorial design?21:54 What is a Plackett-Burman design?22:46 What is a Box-Behnken design?24:00 What is a Central Composite Design?24:34 Creating a DoE online
What is inferential statistics? Explained in 6 simple Steps. numiqo 2023-11-22 | In this video we are gone talk about what inferential statistics does in 6 simple steps (Hypothesis, Population and Sample, Hypothesis Testing, p-Value, Statistical Significance, Errors). But, what is inferential statistics? Inferential statistics allows us to make conclusions or inferences about a population based on data from a sample.► Inferential Statistics Calculatornumiqo.com/statistics-calculator/hypothesis-test► EBOOKnumiqo.com/statistics-book0:00 What is inferential statistics?0:26 What is a sample and a population?1:00 What is a Hypothesis?1:41 What is Hypothesis Testing?3:50 What is statistics significance?4:50 What is a Type I and type II error?6:30 How do I find a suitable hypothesis test?
