Update shifted_mustafa_kilic.py

Author: kilic-mustafa

Week05/shifted_mustafa_kilic.py

@@ -3,13 +3,6 @@
 def shifted(data):
     if not data:
         return None
-
-    mean = sum(data) / len(data)
+    mean = statistics.mean(data)
     median = statistics.median(data)
-
-    if median == 0:
-        return 0
-
-    percentage_shift = abs((mean - median / median)) * 100
-
-    return percentage_shift
+    return 0 if median == 0 else abs(mean - median) / abs(median) * 100