Mathematics, 02.03.2020 23:12 jarteria0

Question 3Load libraryfaraway. Run each of the following models in R. (No interactions, polynomial terms, ortransformations.)Model 1: Data:twins. Y:Foster. X:Biological. Model 2: Data:stepping. Y:HR. X: All other variables in data. Model 3: Data:sat. Y:salary. X: All other variables in data. Answer each of a)-c) withnumerical evidencefor each model. Do not submit RMarkdown or R output, only report the numerical values neccessary to address the questions. a) Is the model overparameterized?b) Is the model overfit?c) Is there multicollinearity? (Hint: theviffunction may save you some time.1)d) Run a model on thesatdata, predictingtotalbased onmathandverbal. Comment on what’shappening in this output.

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Question 3Load libraryfaraway. Run each of the following models in R. (No interactions, polynomial t...