This video will describe the concept of comparing two continuous numerical variables and formally testing whether responses to one variable are associate with responses from the other variable. This builds on the Random Variables video where variables type is described, as well as the Turning Data Into Information- Two Variables video where exploratory visual comparisons are described.

Reminder: a numerical variable is a variable where the possible responses are numbers which reflect the quantity, or amount, of something. Take for example height, in centimeters, or weight, in kilograms.