For a group of 10 army recruits, the weight (in lbs) and exercise capacity (in M

ID: 3200138 • Letter: F

Question

For a group of 10 army recruits, the weight (in lbs) and exercise capacity (in METS) were recorded. The regression equation to predict exercise capacity from weight was found to be: y = 43.81 - 0.105x The correlation for these variables was found to be r = -0.79, this tells us that As the weight of a recruit increases, the recruit's exercise capacity also tends to increase. There is no linear association between body weight and exercise capacity. For each additional pound of body weight, the exercise capacity decreases by 0.79 METS. As a recruit gains weight this causes his exercise capacity to decrease. As the weight of a recruit increases, the recruit's exercise capacity tends to decrease.

Explanation / Answer

Negative correlation is a relationship between two variables in which one variable increases as the other decreases, and vice versa.s

So in above data setthr correct interpretation of r = - 0.79, this tells us that As the weight of a recruit increases, the recruit's exercise capacity tends to decreases

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For a group of 10 army recruits, the weight (in lbs) and exercise capacity (in M

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For a group of 10 army recruits, the weight (in lbs) and exercise capacity (in M

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