Here are residual plots (residuals plotted against predicted values) for three linear regression models Indicate which condition appears to be violated (linearity, outlier, or equal spread) in each case a) b) c) 15 10 5 10 10 0 10 20 30 40 50 60 70 Predicted Value 50 40 30 20 10 10 15 0 17 5 20 0 22 5 25 0 27 5 30 0 32 5 Predicted Value 200 100 100 200 100 200 300 400 500 600 700 Predicted Value

Question: Here are residual plots (residuals plotted against predicted values) for three linear regression models. Indicate which condition appears to be violated (linearity, outlier, or equal

Here are residual plots (residuals plotted against predicted values) for three linear regression models. Indicate which condition appears to be violated (linearity, outlier, or equal spread) in each case.
a)

15 10 -5 -10+ -10 0 10 20 30 40 50 60 70 Predicted Value 50 40 30 20 10 -10 15.0 17.5 20.0 22.5 25.0 27.5 30.0 32.5 Predicted Value 200 100 -100 -200 100 200 300 400 500 600 700 Predicted Value

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