IN THIS PART …

Understand correlation, which is the strength and direction of the relationship between two

variables, and regression, which is a set of techniques for describing the relationship between two

variables.

Get a handle on straight-line regression, which is the simplest kind of regression.

Do multiple regression analysis, which is regression when there’s more than one predictor

variable.

Find out about other useful kinds of regression you encounter in biological research, such as

Poisson regression and nonlinear regression.