The proportion of the variability in the Y distribution which is accounted for by the variability in the X distribution, is determined by
A) the Spearman r
B) the null hypothesis
C) the coefficient of contingency
D) the coefficient of determination

Question

Quizplus · Accepted Answer

The coefficient of determination, or R-squared, measures the proportion of the variability in the Y distribution that is accounted for by the variability in the X distribution. It is calculated as the square of the Pearson correlation coefficient between X and Y, and ranges from 0 to 1. Therefore, D is the best choice. A, B, and C are not correct because they do not measure the proportion of variability explained by X in Y.

The Proportion of the Variability in the Y Distribution Which