1 2 3 4 -1 4 2 0 -2 -3 -2 The following four graphs are residual plots from linear regression analyses. Using these residuals plots, answer the questions. (a) Residual Plot (b) Residual Plot . . O O -1 0 (c) Residual Plot 8 O 2 3 O 4 2 0 -4 23 T ? O -3 -2 O -1 0 1 (c) Residual Plot 2 O 3 -3 -2 -1 0 1 2 3 -3 -2 -1 0 1 2 Which residual plot shows a violation of the linearity assumption? How can we fix this issue? Which residual plot shows the most severe heteroscedasticity? How can we fix this heteroscedasticity issue? Which residual plot shows that a linear regression fits the data well, and why? O 3 40