The following MINITAB output presents a multiple regression equation y = b0 + b1x1 + b2x2 +

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The following MINITAB output presents a multiple regression equation ̂y = b0 + b1x1 + b2x2 + b3x3 + b4x4.image text in transcribed

It is desired to drop one of the explanatory variables. Which of the following is the most appropriate action?
i. Drop x3, then see whether R2 increases.
ii. Drop x3, then see whether adjusted R2 increases.
iii. Drop x1, then see whether R2 increases.
iv. Drop x1, then see whether adjusted R2 increases.

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Elementary Statistics

ISBN: 9781259969454

3rd Edition

Authors: William Navidi, Barry Monk

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