Question: Consider the regression model for the NHL data from Exercise 12-18. (a) Fit a model using GF as the only regressor. (b) How much variability

Consider the regression model for the NHL data from Exercise 12-18.

(a) Fit a model using GF as the only regressor.

(b) How much variability is explained by this model?

(c) Plot the residuals versus and comment on model adequacy.

(d) Plot the residuals from part

(a) versus PPGF, the points scored while in power play. Does this indicate that the model would be better if this variable were included?

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