1 for the data used as an example in section 84 the


1. For the data used as an example in Section 8.4, the equation for predicting SAT total score (X ) from GPA (Y ) is X 98Y 804.

(a) What is the regression coefficient for this equation?

(b) Interpret the regression coefficient in terms of the slope of the regression line.

2. For the data from Chapter 8 used in Problem 14,

(a) write the raw-score formula for the regression of weight on height.

(b) What is the regression coefficient for this equation?

(c) Interpret the regression coefficient in terms of the slope of the regression line.

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