R-squared Definition & Application Wiki

R-squared Definition & Application Wiki

Last Updated by WikiWealth

Short Definition

In statistics, the coefficient of determination, R2, is the proportion of variability in a data set that is accounted for by a statistical model.

There is no consensus about the exact definition of R2. Only in the case of linear regression are all definitions equivalent. In this case, R2 is simply the square of a correlation coefficient.

Long Definition

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Source: http://en.wikipedia.org/wiki/R_squared