list mean python

1# Example to find average of list
2number_list = [45, 34, 10, 36, 12, 6, 80]
3avg = sum(number_list)/len(number_list)
4print("The average is ", round(avg,2))
5

1import numpy as np
2np.mean(list)
3np.std(list)

1# Python program to get average of a list
2
3def Average(lst): 
4	return sum(lst) / len(lst) 
5
6# Driver Code 
7lst = [15, 9, 55, 41, 35, 20, 62, 49] 
8average = Average(lst) 
9
10# Printing average of the list 
11print("Average of the list =", round(average, 2)) 
12
13# Output:
14# Average of the list = 35.75

1list = [15, 18, 2, 36, 12, 78, 5, 6, 9]
2
3# for older versions of python
4average_method_one = sum(list) / len(list) 
5# for python 2 convert len to a float to get float division
6average_method_two = sum(list) / float(len(list))
7
8# round answers using round() or ceil()
9print(average_method_one)
10print(average_method_two)

1l = [15, 18, 2, 36, 12, 78, 5, 6, 9]
2
3# By using the built-in statistics library
4import statistics
5statistics.mean(l)  # 20.11111111111111
6
7# By defining a custom function
8def average(my_list):
9  return sum(my_list) / len(my_list)
10average(l) # 20.11111111111111