Question: Given the following Residual Plot and the Density plot of the residuals. A little background: - This comes from regression model of 'Age' as predictor

Given the following Residual Plot and the Density plot of the residuals. A little background: - This comes from regression model of 'Age' as predictor and 'Time' as response. - 'Time' is the running time of female runners in the marathon; 'Age' is the age of the runners. - The residual plot is plotted as 'Age' vs residual. Answer these questions: 1. Is there evidence of strong linearity? 2. Is there evidence that the standard deviation of the residuals varies substantially with changes in age? 2. Is there evidence that the error distribution for individual residuals is not symmetric?

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