Examine and interpret each of the following residual plots. Be sure to identify any suggested violation of the simple linear regression assumptions and bivariate outliers.

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(a) Standardized residual 3 T 000 Standardized residual 3 (c) 50 60 70 80 90 100 110 120 130 140 (d) 90 95 Standardized residual A W N 80 82 84 86 88 90 92 94 Fitted value Standardized residual 100 105 110 96 98 80 100 120 140 Fitted value 160 180 200