Computer output in the scenario described in problem #8 reports that $s = 2.3 .$ . Which is the correct
Interpretation of this value?
A) The slope of the regression line is 2.3 lights per dollar.
B) The slope of the regression line is $2.30 per light.
C) The initial cost, even with no lights is $2.30
D) The correlation is 2.3.
E) The average prediction error of the regression line is $2.30.

Question

Quizplus · Accepted Answer

The value $s = 2.3$ represents the standard deviation of the residuals, which is the average prediction error of the regression line.

Computer Output in the Scenario Described in Problem #8 Reports s=2.3.s = 2.3 .s=2.3.

Computer Output in the Scenario Described in Problem #8 Reports $s = 2.3 .$