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Chapter 4: Q. 4.88 (page 181)

In Exercises 4.88 - 4.97, we repeat the data and provide the regression equations for Exercises 4.48-4.57. In each exercise.

a. compute the three sums of squares, SST. SSR, and SSE, using the defining formulas (Definition 4.6 on page 177 .

b. verify the regression identify, SST=SSR+SSE

c. compute the coefficient of determination.

d. determine the percentage of variation in the observed values of the response variable that is explained by the regression.

e. state how useful the regression equation appears fo be for making predictions.

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Most popular questions from this chapter

A Knight-Ridder News Service article in an issue of the Wichita Eagle discussed a study on the relationship between country music and suicide. The results of the study. coauthored by S. Stack and J. Gundlach, appeared as the paper "The Effect of Country Music on Suicide" (Social Forces, Vol. 71, Issue 1. Pp. 211-218). According to the article, " analysis of 49 metropolitan areas shows that the greater the airtime devoted to country music. the greater the white suicide rate," (Suicide rates in the black population were found to be uncorrelated with the amount of country music airtime.)

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