Question

A store asked 250 of its customers how much they spend on groceries each week. The responses were also classified according to the gender of the customers. We want to study whether there is a relationship between amount spent on groceries and gender. A meaningful display of the data from this study would be:

(A) side-by-side boxplots(B) a pie chart(C) a histogram(D) a scatterplot(E) a two-way table

Answer 1

D) a scatterplot

Explanation:

Given that a store asked 250 of its customers how much they spend on groceries each week. The responses were also classified according to the gender of the customers. We want to study whether there is a relationship between amount spent on groceries and gender

Since we are interested in the relationship or in statistical terms the correlation between two variables the best graph would be a scatterplot

Scatterplot is the graph in which independent variable on x axis and dependent variable on y axis and observed values are plotted. This shows the trend of the relation whether linear, positive, strong etc.

Hence D) a scatterplot