Simplify axis labels: 'Average (mean)' -> 'Average'

leaderboard_transformer.py

@@ -434,9 +434,9 @@ def _plot_scatter_plotly(
 
     # Set axis labels based on plot type
     if plot_type == 'runtime':
-        x_axis_label = f"Average (mean) runtime per problem (seconds)" if x else "Runtime (Data N/A)"
+        x_axis_label = f"Average runtime per problem (seconds)" if x else "Runtime (Data N/A)"
     else:
-        x_axis_label = f"Average (mean) cost per problem (USD)" if x else "Cost (Data N/A)"
+        x_axis_label = f"Average cost per problem (USD)" if x else "Cost (Data N/A)"
     max_reported_cost = 0
     divider_line_x = 0
 
@@ -722,7 +722,7 @@ def _plot_scatter_plotly(
         template="plotly_white",
         title=plot_title,
         xaxis=xaxis_config,
-        yaxis=dict(title="Average (mean) score", range=[y_min, y_max]),  # Match domain calculation
+        yaxis=dict(title="Average score", range=[y_min, y_max]),  # Match domain calculation
         legend=dict(
             bgcolor='#FAF2E9',
         ),