I am a Mathematics-Function.
\(Average(x_1,x_2 ..\:x_n) = \frac{\sum\limits_{i=1}^{n}{x_i}}{n}\) \(= \frac{x_1 + x_2 + .. + x_n}{n}\)
def Average(X1_X2_Xn_List):
List_Count = len(X1_X2_Xn_List)
Sum = 0
for Xi in X1_X2_Xn_List:
Sum += Xi
return Sum / List_Count