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Pre-Calculus
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Regression and Model Selection
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Pre-Calculus
Pre-CAL.163 Regression and Model Selection
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A U-shaped residual plot is strong evidence that a model is appropriate as long as the mean residual is 0.
A
True, a mean of 0 makes any residual plot random
B
False, the U-shape shows a systematic residual pattern
C
True, residual plots are useful only for linear models
D
False, because residuals must all be positive
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