diff --git a/Week03/shifted_yigit_dastan.py b/Week03/shifted_yigit_dastan.py
new file mode 100644
index 00000000..ccbd9e11
--- /dev/null
+++ b/Week03/shifted_yigit_dastan.py
@@ -0,0 +1,9 @@
+def shifted(data):
+  length = len(data)
+  s_data = sorted(data)
+  mean = sum(data) / length
+  if length % 2 == 0:
+    median = (s_data[length // 2] + s_data[length // 2 - 1]) / 2
+  else:
+    median = s_data[length // 2]
+  return abs(mean - median) / abs(mean) * 100
\ No newline at end of file