Question

5.) You can NOT use a regression for which of the following activities?

a.) You can in fact use a regression model for all of these

b.) Forecasting new observations

c.) Identifying unusual data points

d.) Measuring the proportion of variability in the outcome variable explained by the predictor variables

6.) A simple regression equation decomposes the observed data into two parts: the fitted values and the residuals. What is the interpretation of a residual?

a.) The horizontal distance from a point to the fitted regression line

b.) The squared vertical distance from a point to the fitted regression line

c.) The intercept of the regression line

d.) The vertical distance from a point to the fitted regression line

Answer 1

5.) You can NOT use a regression for which of the following activities?

Ans: c.) Identifying unusual data points.

Note: "a.) You can in fact use a regression model for all of these" is not a full sentence. Hence, I can't conclude.

6.) A simple regression equation decomposes the observed data into two parts: the fitted values and the residuals. What is the interpretation of a residual?

Ans:

d.) The vertical distance from a point to the fitted regression line