An economist conducted a study of the possible association between weekly income and weekly grocery expenditures. Of particular interest was whether higher income would result in shoppers to spending more on groceries. A random sample of shoppers at a local supermarket was obtained. A questionnaire was administered asking about the weekly income of each shopper's family and their grocery bill for that week. The explanatory variable is:
A)weekly income.
B)weekly expenditure.
C)gender
D)All of the answer options are correct.

Question

Quizplus · Accepted Answer

The explanatory variable (also known as the independent variable) is the variable that is being studied as the potential cause of changes in the dependent variable. In this case, the explanatory variable is the weekly income of each shopper's family.

An Economist Conducted a Study of the Possible Association Between