We would prefer to estimate the number of books in a college library without counting them. Data are collected From colleges across the country of the number of volumes, the student enrollment (in thousands), the highest degree offered (1 = BA.2 = MA,3 = PhD), and size of the main campus (in acres). Results of this (hypothetical) study are displayed here:
Using a forward stepwise regression, show how each of the three factors affects the number of volumes in a college library. Treat DEGREE as a continuous variable (yup, that is a bit silly, but we'll do it the right way in the next problem).
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