diff --git a/functions/utility.py b/functions/utility.py
index 7dc9ca79553c97ff1030d7b749ff2b26acc9b6ea..03da98f72ceda742388a56c0c5321e21c0468d22 100644
--- a/functions/utility.py
+++ b/functions/utility.py
@@ -72,7 +72,7 @@ def get_plot_data_from_dataset(
     # DONE #
 
 
-def cal_main_and_standard_deviation(data: np.ndarray) -> np.ndarray:
+def cal_mean_and_standard_deviation(data: np.ndarray) -> np.ndarray:
     """Calculating mean and standard_deviation for raw data.
 
     Args: