An Introduction to the Chi-Square Distribution @jbstatistics

An Introduction to the Chi-Square Distribution @jbstatistics

Uploaded October 2012 | Updated September 2026, 2 hours ago

I have an updated and improved version of this video available at youtu.be/hcDb12fsbBU.

A brief introduction to the chi-square distribution. I discuss how the chi-square distribution arises, its pdf, mean, variance, and shape.

An Introduction to the Chi-Square Distribution

Hypothesis Tests for Equality of Two Variances

Pooled or Unpooled Variance t Tests and Confidence Intervals? (To Pool or not to Pool?)

Confidence Intervals for One Mean: Sigma Known (Z Method)

Type I Errors, Type II Errors, and the Power of the Test

Deriving the Mean and Variance of the Sample Mean

The Law of Total Probability

Confidence Intervals for One Mean: Determining the Required Sample Size

Inference for Two Means: Introduction

Simple Linear Regression: Inference on the Slope (The Formulas) (Old, fast version)

The Binomial Distribution: Mathematically Deriving the Mean and Variance

Proof that if events A and B are independent, so are Ac and B (and A and Bc)

An Introduction to the Chi-Square Distribution