Base design

watcher_visio/static/js/analytics/utils.js

@@ -0,0 +1,12 @@
+// Utility functions
+function calculateStats(data) {
+    if (!data || data.length === 0) return { mean: 0, std: 0 };
+    
+    const mean = data.reduce((a, b) => a + b, 0) / data.length;
+    const variance = data.reduce((a, b) => a + Math.pow(b - mean, 2), 0) / data.length;
+    const std = Math.sqrt(variance);
+    
+    return { mean, std };
+}
+
+// Export other utility functions...