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Cross Validation

We show the results of cross validation and $C_p$ below.


CV ASPE $C_p$
16.4081 233.9
16.3587 328.4
10.1053 26.7
11.2360 162.9
9.5627 23.1
10.2004 23.6
9.2744 12.8
10.5533 23.5
9.7349 9.3
9.2372 14.3
9.7266 7.0

Note that the best value of Cross-Validation is for the second to last model (the variable displace not included). Cross-Validation and $C_p$ generally agree, but not perfectly. A plot of $ASPE$ vs. $C_p$ is shown below.

Figure 1: Plot of $C_p$ (horizontal axis) and Cross Validation $ASPE$ (vertical axis).


Dennis Cox 2002-12-01