2.-Statistics/R-squared.md

@@ -71,10 +71,15 @@ In data analysis, this fallacy occurs when researchers fit multiple models or te
 
 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.
 
-<picture>
-  <source srcset="../images/formulas/AdjustedRSquared_dark.png" media="(prefers-color-scheme: dark)">
-  <img src="../images/formulas/AdjustedRSquared_light.png" alt="Adjusted R² Formula">
-</picture>
+<img id="adjustedRsquared" src="../images/formulas/AdjustedRSquared_light.png" alt="Adjusted R² Formula">
+
+<script>
+  // Check if user prefers dark mode
+  if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
+    document.getElementById('adjustedRsquared').src = "../images/formulas/AdjustedRSquared_dark.png";
+  }
+</script>
+