In each of the four examples listed below, one of the given variables is independent (x) and one of the given variables is dependent (y). Indicate in each case which variable is independent and which variable is dependent.

Question

I. Rainfall; Crop yield
II. Taxi fare; Length of ride
III. Alcohol consumption; Blood alcohol level
IV. Average annual snowfall; Geographic location

Answer 1

An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable.

A dependent variable is the response or measure of results.

Answer 2

I. dependent variable
II. independent variable
III. independent variable
IV. dependent variable

Is this correct?