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R-square

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If you have an R^2 of .39 and adjusted R^2 of .37 can you please tell me how they are related? What does the adjusted R^2 tell me about R^2?

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R-square indicates the variance in dependent variable explained by the regression model. An R-square of 0.39 means that 39% variance in the dependent variable is explained by the regression model.
While we are trying to build regression models, the value of R-square will increase if we add more number of variables. For example, if we are looking to predict the salary of an individual, his education level ...

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