The study of two things (amounts, values, “variables”) and how they are connected. ase study method -The close study of one person, group, process, event, etc. (most often, one person). The one chosen (for example, Lauren Slater, who takes Prozac) is seen as like others in a larger group (for example, the larger group of all people taking Prozac) who are not being studied.

An analysis of the relationship between two variables.

This is the term for when two variables are being measured at one time.