Exercises

Mix and Match

Match each description on the left with its mathematical expression on the right.

1. Use this plot to check the linear condition. (a) Normal quantile plot of residuals
2. Use this plot to check for dependence in data over time. (b) Heteroscedasticity
3. Use this plot to check the similar variances condition. (c) Timeplot of residuals
4. Use this plot to check the nearly normal condition. (d) Durbin-Watson statistic
5. Term for data with unequal error variation (e) Leveraged
6. The SRM assumes that the model errors have this property. (f) Plot of residuals on x
7. An observation in a regression model with an unusually large or small value of X (g) Random sample from a population
8. Statistic used to detect ...

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