diff --git a/Week03/shifted_seymanur_sahin.py b/Week03/shifted_seymanur_sahin.py
new file mode 100644
index 00000000..5b1b717b
--- /dev/null
+++ b/Week03/shifted_seymanur_sahin.py
@@ -0,0 +1,6 @@
+def shifted(data):
+    mean = sum(data) / len(data)  #calculates average (mean)
+    s = sorted(data)  #sortes from small to large
+    n = len(s)  #stores the total count
+    median = (s[n//2] + s[(n-1)//2]) / 2  #calculates the median
+    return abs((mean - median) / mean) * 100  #ensures the result is always positive for %