diff --git a/Week02/weighted_metehan_gormez.py b/Week02/weighted_metehan_gormez.py
new file mode 100644
index 00000000..b75b1924
--- /dev/null
+++ b/Week02/weighted_metehan_gormez.py
@@ -0,0 +1,7 @@
+import random
+
+def weighted_srs(data, n, weights, with_replacement=False):
+    if with_replacement:
+        return random.choices(data, weights=weights, k=n)
+    counts = [int(w * 10000) + 1 for w in weights] if weights else None
+    return random.sample(data, counts=counts, k=n) if weights else random.sample(data, n)
diff --git a/Week03/shifted_metehan_gormez.py b/Week03/shifted_metehan_gormez.py
new file mode 100644
index 00000000..984218a9
--- /dev/null
+++ b/Week03/shifted_metehan_gormez.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