weights based on height, measured in inches, the percentage of body fat of an at

Question

weights based on height, measured in inches, the percentage of body fat of an athlete, and age. The researcher calculates the regression equation as (weight) 3.849 (height) 1.424 (percent body fat) 0.908 (age) 84.686. If a female athlete is 67.555 inches tall, has a 21.323 percentage of body fat, is 20.648 years old, and has a weight of 239.689. What is the residual? 1) 119.3938 2) 52.7402 O 3) -52.7402 4) We do not know the observations in the data set, so we cannot answer that question. 5) 31.9458

Explanation / Answer

Predicted Weight = 3.849*67.555 + 1.424*21.323 - 0.908*20.648 - 84.686 = 186.948763

Observed weight = 239.689

Residual = 239.689 - 186.948763 = -52.740237

Thus, option (3).

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