One hundred males are selected for a study on factors related to high blood pres

Question

One hundred males are selected for a study on factors related to high blood pressure. For each subject we record their Age (years), their Weight (pounds) and their Serum Cholesterol (mg/ml) and we measure their Systolic Blood Pressure (mmHg). To determine the relationship of Age, Weight and Cholesterol to Blood Pressure we do a linear regression Based on the results of this regression, answer the questions below. Source df MS F(3, 96) 101.050 Model 26731.876 Residual8465.315 3 8910.625 ProbF 96 88.180 R-squared 0.0000 = - 0.759 Adj R-squared = 0.752 Total 35197.191 SBP (mm Hg) Coef. Std. Err Beta .252 408 345 052 029 044 9.405 4.845 0.000 14.243 0.000 7.767 0.000 -.641 .523 Age (yrs) Weight (pounds) Serum Cholestrol (mg/di .248 718 . 395 cons -6.028

Explanation / Answer

1. B) for 1 year increase in age the output variable increases by 0.252

2. B) weight has greatest impact as the coefficient is highest

3. C

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