Backward Elimination of Terms
Candidate terms: DrDist, DrAccu, GIR, Sand Saves, Scrambling
Constant
DrDist
DrAccu
GIR
Sand Saves
Scrambling
S
R-34
R-sq (adj)
R-sq (pred)
Mallows' Cp
------Step 1-----
Coef
-11280801
P
12222 0.448
-58196 0.026
107488
0.008
48630 0.009
66373
0.114
a to remove = 0.05
936403
21.648
18.35%
12.93%
6.00
-----Step 2 -----
Coef
-7264460
P
-71841
0.000
121557 0.001
46404 0.012
58872 0.149
934761
13.60%
4.58
-----Step 3-----
Coef
-4296110
939054
14.14%
4.69
a. Step 3 produces the final model. Which of the predictor(s) will not be in it? (Remember
to briefly explain your answer.)
b. Which of the models has the lowest multiple R-squared? The lowest adjusted R-
squared? (Remember to briefly explain your answer.)
c. If the alpha to remove is changed from 0.05 to 0.32, is it possible for DrDist to be in the
Step 2 model and one of the other predictors to be eliminated? Briefly explain your
answer.
Fig: 1