# Question: Use the data on percentage of investments in energy securities

Use the data on percentage of investments in energy securities and tax efficiency from Exercise 14.16.

In Exercise

a. Compute the standard error of the estimate and interpret your answer.

b. Interpret your result from part (a) if the assumptions for regression inferences hold.

c. Obtain a residual plot and a normal probability plot of the residuals.

d. Decide whether you can reasonably consider Assumptions 1–3 for regression inferences to be met by the variables under consideration.(The answer here is subjective, especially in view of the extremely small sample sizes.)

In Exercise

a. Compute the standard error of the estimate and interpret your answer.

b. Interpret your result from part (a) if the assumptions for regression inferences hold.

c. Obtain a residual plot and a normal probability plot of the residuals.

d. Decide whether you can reasonably consider Assumptions 1–3 for regression inferences to be met by the variables under consideration.(The answer here is subjective, especially in view of the extremely small sample sizes.)

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