A multiple regression equation includes 5 independent variables,and the coefficient of determination is 0.81.The percentage of the variation in y that is explained by the regression equation is:
A)81%
B)90%
C)86%
D)about 16%

Question

Quizplus · Accepted Answer

The coefficient of determination (R-squared) represents the percentage of variation in the dependent variable (y) that can be explained by the independent variables included in the regression equation. Therefore, an R-squared of 0.81 means that the regression equation can explain 81% of the variation in y. Hence, choice A (81%) is the correct answer.

A Multiple Regression Equation Includes 5 Independent Variables,and the Coefficient