First-year college Grade Point Average (GPA) from Graybill and Iyer (1994).

1 |

`GPA`

is a data frame with 5 variables. `y` is the first-year college
Grade Point Average (GPA) and `x1`-`x4` are four predictor variables
from standardized tests (SAT) administered before matriculation.

- y
GPA

- x1
math score on the SAT

- x2
verbal score on the SAT

- x3
high school math

- x4
high school English

Graybill, F.A. and Iyer, H.K. (1994). *Regression analysis: concepts and
applications*. Duxbury Press, Belmont, CA.

Burnham, K. P. and Anderson, D. R (2002) *Model selection and multimodel
inference: a practical information-theoretic approach*. 2nd ed. New York,
Springer-Verlag.

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