Researchers at a large nutrition and weight management company are trying to bui

Question

Researchers at a large nutrition and weight management company are trying to build a model to predict a person's body fat percentage front an array of variables such as body weight, height, and body measurements around the neck, chest, abdomen, hips, biceps, etc. After employing various variable selection techniques. the SPSS output for the final model is given below: How many people provided data for this study? A. 46 B. 48 C. 49 D. 0.50 What percent of the variance in percent body fat would remain unexplained weight in the regression model? A. 7.86% B. 15.11% C. 84.2% D. Unable to determine with the information given

Explanation / Answer

Answers

18. C. 49

Hint: Sample size = Total df + 1 (Since total df = sample size - 1)

= 48 + 1

= 49

26. D. Unable to determine with the information given.

Hint: Percent of the variance in the percent body fat would remain unexplained if there were only weight can be computed only if we are given the regression output with only weight.

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