What is a p-value? @jbstatistics
What is a p-value?  @jbstatistics
Uploaded March 2012 | Updated September 2026, 1 minute ago
A brief intro to the concept of the p-value, in the context of one-sample Z tests for the population mean. Much of the underlying logic holds for other tests as well.

I have an updated, revised (and slower) version of this video at youtu.be/UsU-O2Z1rAs.
What is a p-value?Chi-square tests for count data: Finding the p-valueSimple Linear Regression: Interpreting Model ParametersDiscrete Probability Distributions: Examples (Binomial,Poisson,Hypergeometric)(fast version)Sampling Distributions: Deriving the Mean and Variance of the Sample MeanConfidence Intervals for One Mean: Interpreting the IntervalDiscrete Probability Distributions: Example Problems (Binomial, Poisson, Hypergeometric, Geometric)What Factors Affect the Power of a Z Test?Intro to Confidence Intervals for One Mean (Sigma Known)Introduction to Simple Linear RegressionChi-square Tests of Independence (Chi-square Tests for Two-Way Tables)An Introduction to the Hypergeometric Distribution
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What is a p-value?

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