Question

You are building a regression equation which relates household weekly expenditure on FOOD to the household's weekly INCOME.

x =

Weekly INCOME (hundreds of dollars)

y =

Weekly expenditure on FOOD (dollars)

From the data for 25 households the following quantities are calculated.

n =

25

∑(ŷ − y̅)² =

112,287.77

x̅ =

20.776

∑(y − y̅)² =

292,245.84

y̅ =

301.920

∑xy =

166,105.00

∑x² =

11,559.28

5	On average, observed food expenditures deviate from the predicted values by _______
a	$97.30
b	$88.45
c	$80.49
d	$73.25

Answer 1

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