Question: Study the following Minitab residual diagnostic graphs. Comment on any possible violations of regressionassumptions. Normal Plot of Residuals 25 20 15 10 -5 10 15

Study the following Minitab residual diagnostic graphs. Comment on any possible violations of regressionassumptions.

Normal Plot of Residuals 25 20 15 10 -5 10 15 20 0 Normal Score Histogram of Residuals Residuals Versus the Fitted Values 7 6 20 15 OF A-5 10 15 20 45 50 Fitted Value 20 10 0.0 10 20 Residual

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