This figure shows four scatter plots, which are described from left to right and top to bottom. The calculated results are provided in the previous text.

- Residuals vs Fitted: The X axis has a range of 0 to 30 and is labeled Fitted Values. The Y axis has a range of 0 to 10 and is labeled Residuals. A spline extends from (0, -4) to (15, 1) to (30, -3).

- Scale-Location: The X axis has a range of 0 to 30 and is labeled Leverage Fitted Values. The Y axis has a range of 0.0 to 1.5 and is labeled Square Root of Standardized Residuals. A spline extends from (0, -0.9) to (30, 1.0).

- Normal Q-Q: The X axis has a range of -2.5 to 2.5 and is labeled Theoretical Quantiles. The Y axis has a range of -2 to 2 and is labeled Standardized Residuals.

- Residuals vs Leverage: The X axis has a range of 0.00 to 0.20 and is labeled Leverage. The Y axis has a range of -3 to 2 and is labeled Standardized Residuals. A spline extends from (0.25, -0.5) to (0.20, -1). Cook's distance is plotted in the upper right corner with a value of 0.5, and twice in the lower right corner at 0.5 and 1.