fix formula name

komaksym · komaksym · commit 2c0d6d16ee2f · 2025-06-20T20:20:29.000+02:00
diff --git a/questions/138_find-the-best-gini-based-split-for-a-binary-decisi/learn.md b/questions/138_find-the-best-gini-based-split-for-a-binary-decisi/learn.md
@@ -26,7 +26,7 @@ A pure node (all one class) has \( G = 0 \), and higher values indicate more cla
 
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-## Gini Gain for a Split
+## Weighted Gini Impurity
 
 Given a feature and a threshold to split the dataset into left and right subsets:
 
