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david118
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Homework Statement
based on this data
http://www.stat.ufl.edu/~rrandles/sta4210/4210lectures/secondexreview/exam2rev.pdf
1) Consider the full (three predictor) model. Is this model useful? (are any of the predictors worthwhile?)
2) Use the All-Subsets and conduct a search for the best model using our five criteria.
3) Examine the approprateness of the model chosen in 2.
4) Conduct a test of whether X2 - (locadv) should be dropped from the three variable model.
Homework Equations
The Attempt at a Solution
So,
1) I would say the model is useful based upon the fact that the F-Value in the anova test is larger than the one on the F-table based upon the degrees of freedom.
2) According the all-subsets data, the best model uses X1 and X3
3)Since the F-test is greater than slated F-table value, it is appropriate. (NOT SURE ABOUT THIS PART)
4) Since the model is better than the all three, that variable should be dropped. (NOT SURE ABOUT THIS)
thanks