Class 10: introduction to correlations

This lecture begins Unit 2 of my class. In this unit, I will be focusing on multiple correlation and regression (MCR) analysis, and I will begin with a presentation of the humble bivariate correlation. You probably know quite a bit about correlations, already, but this lecture will give you a good review (I hope!) and may include some information that is new to you, such as procedures for testing hypotheses and making confidence intervals with correlations.