diff --git a/Week03/shifted_elif_gulseren.py b/Week03/shifted_elif_gulseren.py
new file mode 100644
index 00000000..984218a9
--- /dev/null
+++ b/Week03/shifted_elif_gulseren.py
@@ -0,0 +1,6 @@
+import statistics
+
+def shifted(data):
+    mean = statistics.mean(data)
+    median = statistics.median(data)
+    return abs(mean - median) / abs(mean) * 100 if mean != 0 else 0