Regression Basics

Regression fits a line (or curve) to data to predict one thing from others. It is the workhorse of data analysis.

Definition

A statistical method that models the relationship between one outcome variable and one or more predictor variables, producing predictions and measuring the size and direction of relationships.

Step 1

Predict first

In one or two sentences, what do you think this concept means? Wrong is fine; the small struggle is what makes the answer stick.