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Based on a representative sample of college men, a regression line relating y = ideal weight tox = actual weight, for men, is given by
Ideal weight = 53 + 0.7 *actual weight
-In this context, the slope of +0.7 indicates that
A) all men would like to weigh 0.7 pounds more than they do.
B) on average, men would like to weigh 0.7 pounds more than they do.
C) on average, as ideal weight increases by 1 pound actual weight increases by 0.7 pounds.
D) on average, as actual weight increases by 1 pound ideal weight increases by 0.7 pounds.

Question

Use the following information for questions:
 Based on a representative sample of college men, a regression line relating y = ideal weight tox = actual weight, for men, is given by
Ideal weight = 53 + 0.7 *actual weight
-In this context, the slope of +0.7 indicates that
A) all men would like to weigh 0.7 pounds more than they do.
B) on average, men would like to weigh 0.7 pounds more than they do.
C) on average, as ideal weight increases by 1 pound actual weight increases by 0.7 pounds.
D) on average, as actual weight increases by 1 pound ideal weight increases by 0.7 pounds.

Quizplus · Accepted Answer

The slope in a regression equation represents the average change in the dependent variable (in this case, ideal weight) for each one-unit increase in the independent variable (in this case, actual weight). Therefore, a slope of +0.7 indicates that, on average, as actual weight increases by 1 pound, ideal weight increases by 0.7 pounds.

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