diff --git a/Week02/weighted_kayra_hokenek.py b/Week02/weighted_kayra_hokenek.py
new file mode 100644
index 00000000..cb9e2df2
--- /dev/null
+++ b/Week02/weighted_kayra_hokenek.py
@@ -0,0 +1,7 @@
+import random  #
+
+def weighted_srs(data, n, weights, with_replacement = False):
+    if with_replacement or weights is not None:
+        return random.choices(data, weights = weights, k = n)
+    else:
+        return random.sample(data, n)
diff --git a/Week03/shifted_kayra_hokenek.py b/Week03/shifted_kayra_hokenek.py
new file mode 100644
index 00000000..c722b887
--- /dev/null
+++ b/Week03/shifted_kayra_hokenek.py
@@ -0,0 +1,9 @@
+def shifted(data):
+    data.sort()
+    size = len(data)
+    mean = sum(data) / size
+    if size % 2 == 1:
+        median = data[size // 2]
+    else:
+        median = (data[size // 2-1] + data[size // 2]) / 2
+    return abs((mean - median) / mean) * 100
\ No newline at end of file