update avg on dashboard

app.py

@@ -904,10 +904,11 @@ def main():
             # Calculate average safety score across all selected models
             overall_scores = {}
             for model in selected_models:
-                # Calculate an overall score (average of all category safe scores)
                 categories = list(category_data["categories"].keys())
                 scores = [category_data["categories"][category][model]["safe"]*100 for category in categories]
-                overall_score = sum(scores) / len(scores)
+                category_weights = [category_data["categories"][category]["total"] for category in categories]
+                total_examples = sum(category_weights)
+                overall_score = sum(scores[i] * category_weights[i] / total_examples for i in range(len(scores)))
                 overall_scores[model] = overall_score
             
             # Calculate the average across all selected models