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.

Question

Quizplus · Accepted Answer

To display the relationship between two quantitative variables, such as weekly income and grocery expenditure, scatter plots or line graphs are typically used. Side-by-side histograms, boxplots, and pie charts are not appropriate for showing the direct relationship between two quantitative variables.

An Economist Conducted a Study of the Possible Association Between