# The manager of a commuter rail transportation system was recently asked by her governing board to determine

## Question:

a. What do you expect the signs of the coefficients of the explanatory variables in this multiple regression equation to be? Why?

b. Estimate a multiple regression equation using the given data. Interpret each of the estimated regression coefficients. Are the signs of the estimated coefficients consistent with your expectations in part a?

c. What proportion of the total variation in the number of weekly riders is not explained by this estimated multiple regression equation?

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**Related Book For**

## Data Analysis And Decision Making

**ISBN:** 415

4th Edition

**Authors:** Christian Albright, Wayne Winston, Christopher Zappe