R Squared Value
R Squared Value | Statistic Formula Calculation
R-squared is a measure that indicates the extent to which fluctuations in portfolio returns are correlated with those of the general market. For example, an R-squared of 0.75 implies that 75% of the fluctuation in a portfolio's return is explained by the fluctuation in the market (the market risk level).
R-squared is used as a measure of how reliable, predictable, and valid the alpha and beta are. In Russell Performance Universes (RPU), r-squared is calculated as follows:
Where | Equals |
r2 | R-squared |
n | Number of observations |
Rxi | Market excess return |
Ryi | Portfolio's excess return |
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