| ... | @@ -72,8 +72,8 @@ In data analysis, this fallacy occurs when researchers fit multiple models or te |
... | @@ -72,8 +72,8 @@ In data analysis, this fallacy occurs when researchers fit multiple models or te |
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Adjusted R² is an alternative to R² that adjusts for the number of predictors in the model. Unlike R², which increases whenever a new predictor is added (even if it doesn’t improve the model), adjusted R² only increases if the new predictor improves the model more than would be expected by chance.
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Adjusted R² is an alternative to R² that adjusts for the number of predictors in the model. Unlike R², which increases whenever a new predictor is added (even if it doesn’t improve the model), adjusted R² only increases if the new predictor improves the model more than would be expected by chance.
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<picture>
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<picture>
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<source srcset="images/formulas/AdjustedRSquared_dark.png" media="(prefers-color-scheme: dark)">
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<source srcset="../images/formulas/AdjustedRSquared_dark.png" media="(prefers-color-scheme: dark)">
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<img src="images/formulas/AdjustedRSquared_light.png" alt="Adjusted R² Formula">
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<img src="../images/formulas/AdjustedRSquared_light.png" alt="Adjusted R² Formula">
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</picture>
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</picture>
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