Use the given information to find the coefficient of determination. A regression equation is obtained for a collection of paired data. It is found that the total variation is 20.711, the explained variation is 18.592, and the
Unexplained variation is 2.119.
A) 0.114
B) 1.114
C) 0.898
D) 0.102

Question

Quizplus · Accepted Answer

The coefficient of determination, r-squared, is calculated by dividing the explained variation by the total variation: r-squared = explained variation/total variation. In this case, r-squared = 18.592/20.711 = 0.898. Therefore, the best choice is C, which corresponds to the correct value for the coefficient of determination.

Use the Given Information to Find the Coefficient of Determination