What is the relationship between the amount spent per week on food and the size of the family? Do larger families spend more on food? A sample of 10 families in the Chicago area revealed the following figures for family size and the amount spent of food per week.
Family Size Amount Spent
3 $99
6 $104
5 $151
6 $129
6 $142
Family Size Amount Spent
3 $111
4 $74
4 $91
5 $119
3 $91
a. Compute the coefficient of correlation.
b. Determine the coefficient of determination.
c. Can we conclude that there is a postive association between the amount spent on food and the family size? Use the .05 significance level