A regression equation for x = handspan (cm) and y = height (in.) is expressed with the following formula. Average height = 51.1

Question

A regression equation for x = handspan (cm) and y = height (in.) is expressed with the following formula.
Average height = 51.1 +0.7 (Handspan)

(a) Interpret the slope of 0.7 in terms of how height changes as handspan increases.
For each one-centimeter increase in handspan, average height increases 1 inch.
For each one-centimeter increase in handspan, average height increases 0.7 inches.
For each one-centimeter increase in handspan, average height decreases 0.7 inches.
For each one-centimeter increase in handspan, average height decreases 51.1 inches.
For each one-centimeter increase in handspan, average height increases 51.1 inches.

(b) What is the estimated average height of women with a handspan of 25 centimeters? (Round the answer to one decimal place.)
                                             in
(c) Molly has a handspan of 25 centimeters and is 76.1 inches tall. What is the prediction error (residual) for Molly? (Round the answer to one decimal place.)
                                             in

Kunduz · Accepted Answer

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