How do I calculate the residual SS and MS? 1. A 10-year study by the American He

Question

How do I calculate the residual SS and MS?

1. A 10-year study by the American Heart Association provided data on how age, blood pressure, and smoking relate to the risk of strokes. Assume that the regression results pertaining to data are the following. Risk: the probability that the patient will have a stroke over the next 10-year period. Age: age of the person. Pressure: blood pressure Family: number of stroke the person's parents have had. ANOVA df MS Regression3 Residual Significance F 2.06E07 3660.74 1220.25 36.82 16 19 Total Coefficients Std Error 91.76 1.08 0.25 8.74 t-stat p-value Intercept Age Pressure Family 15.22 0.17 0.05 How do you tigure ou the highlighted cells? a. What is the R2 of thé regression? b. What is the standard error of the regression? What does it mean? c. Explain in the cohtext of this problem what the following coefficients mean: Age Pressure, Fam d. Test the overall significance of the mødel at the 0.05 level. e. is Pressure tatistically significant infexplaining risk? Test thsypothesis at a o f. Find a 95% confidence interval forage, what does this interval mean, and what g. Estimate the risk of a heart attack for a person who is 7%ears old, with a blood significance level parameter does it bracket? pressure of 165, and whose pafents have had one strote

Explanation / Answer

SOlution-

F test Statistic is calculated as-

mean square regression / mean square residual =36.82

So, mean square residual = mean square regression / 36.82

= 1220.25 / 36.82

= 33.14

Residual sum of squares error = mean square error * degree of freedom

= 33.14 * 16

= 53.255

Answers

TY!

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