The product moment correlation,r²,is an index used to determine whether a linear,or straight-line,relationship exists between X and Y.It indicates the degree to which the variation in one variable,X,is related to the variation in another variable,Y.

Question

Quizplus · Accepted Answer

The product moment correlation coefficient, typically denoted as r, indeed measures the strength and direction of a linear relationship between two variables, X and Y. However, the notation "r²" does not accurately represent any standard notation for this coefficient. The correct notation is simply "r".

The Product Moment Correlation,r2,is an Index Used to Determine Whether

The Product Moment Correlation,r²,is an Index Used to Determine Whether