• Entry
  • Reader's guide
  • Entries A-Z
  • Subject index

R2

R2 (pronounced as “R squared”), or the coefficient of determination, is a statistical measure that is interpreted as the proportion of variance of the dependent variable (DV, or regressand) that is explained by the independent variable (IV, or predictor or explanatory variable) or by the statistical model. In other words, the R2 value gives the information on how well the IV explains the outcome variable (accounts for the variability of the DV).

The value of R2 is standardized (ranges from 0 to 1), which makes it easy to interpret; therefore, it is commonly used in statistical models for research (e.g., in education, psychology, biology, or economy). In social sciences, the coefficient of determination might be used in studies aimed at predicting school grades or estimating ...

    • Loading...
    locked icon

    Sign in to access this content

    Get a 30 day FREE TRIAL

    • Watch videos from a variety of sources bringing classroom topics to life
    • Read modern, diverse business cases
    • Explore hundreds of books and reference titles