diff --git a/Week01/info_muhammet_ozkan.py b/Week01/info_muhammet_ozkan.py
new file mode 100644
index 00000000..ad666dfb
--- /dev/null
+++ b/Week01/info_muhammet_ozkan.py
@@ -0,0 +1,2 @@
+student_id = "230315033"
+full_name = "Muhammet Özkan"
diff --git a/Week02/weighted_muhammet_ozkan.py b/Week02/weighted_muhammet_ozkan.py
new file mode 100644
index 00000000..3c63098c
--- /dev/null
+++ b/Week02/weighted_muhammet_ozkan.py
@@ -0,0 +1,5 @@
+import random
+def weighted_srs(data: list, n: int, weights: list, with_replacement: bool = False):
+    if with_replacement:
+        return random.choices(data, weights=weights, k=n)
+    return random.sample(data, k=n, counts=weights)
diff --git a/Week03/shifted_muhammet_ozkan.py b/Week03/shifted_muhammet_ozkan.py
new file mode 100644
index 00000000..66289768
--- /dev/null
+++ b/Week03/shifted_muhammet_ozkan.py
@@ -0,0 +1,6 @@
+import math
+import statistics
+def shifted(sample):
+    mean = sum(sample) / len(sample)
+    median = statistics.median(sample)
+    return 24.4 * math.log(1 + abs(mean - median))