rectify function's comments v3

lidro/create_virtual_point/stats/calculate_stat.py

@@ -3,7 +3,7 @@
 import numpy as np
 
 
-def calculate_quartile_(points: np.array, q: int) -> float:
+def calculate_quartile(points: np.array, q: int) -> float:
     """
     Calculates the quartile's value of Z coordinates
 
@@ -16,7 +16,7 @@ def calculate_quartile_(points: np.array, q: int) -> float:
         - float: The quartile of Z coordinates
     """
     altitudes = points[:, 2]  # Extract the altitude column
-    n_quartile = round(np.percentile(altitudes, q), 2)
+    n_quartile = np.round(np.percentile(altitudes, q), 2)
 
     return n_quartile
 
@@ -32,6 +32,6 @@ def calculate_median(points: np.array) -> float:
         - float: The median of Z coordinates
     """
     altitudes = points[:, 2]  # Extract the altitude column
-    n_median = round(np.median(altitudes), 2)
+    n_median = np.round(np.median(altitudes), 2)
 
     return n_median