An Economist Conducted a Study of the Possible Association Between

Multiple Choice

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 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. A graphical display of the relationship between grocery expenditure and income might be:

A) a side-by-side histogram.
B) a side-by-side boxplot.
C) a side-by-side pie chart.
D) None of the answer options is correct.