R Squared Value | Statistic Formula Calculation

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:

Formula for R-Squared

Where

Equals

r2

R-squared

n

Number of observations

Rxi

Market excess return
(market proxy return minus risk-free proxy return)

Ryi

Portfolio's excess return
(portfolio return minus risk free proxy return)


For over 1,000 additional terms and definitions please see our Investment Glossary Guide.

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