diff --git a/Persain/24_statistics.md b/Persain/24_statistics.md
index 99856bc..a1fdd0e 100644
--- a/Persain/24_statistics.md
+++ b/Persain/24_statistics.md
@@ -172,12 +172,14 @@ print('numpy_array_from_tuple: ', numpy_array_from_tuple) # numpy_array_from_tup
     nums = np.array()
     print(nums)
     print('shape of nums: ', nums.shape)
+    numpy_two_dimensional_list = np.array([[0,1,2],[3,4,5],[6,7,8]])
     print(numpy_two_dimensional_list)
     print('shape of numpy_two_dimensional_list: ', numpy_two_dimensional_list.shape)
-    three_by_four_array = np.array([,
-       ,
-       ])
+    three_by_four_array = np.array([[0, 1, 2, 3],
+        [4,5,6,7],
+        [8,9,10,11]])
     print(three_by_four_array.shape)
+    print('shape of three_by_four_array: ', three_by_four_array.shape)
 ```
 
 ```sh