Write a program that defines functions (mean and deviation), that computes mean and standard deviation of given numbers. The formula for the mean and standard deviation of n numbers is given as:



Code

import math

def mean(numbers):
    return sum(numbers) / float(len(numbers))

def std_dev(numbers):
    avg = mean(numbers)
    variance = sum([pow(x-avg,2) for x in numbers]) / float(len(numbers)-1)
    return math.sqrt(variance)

if __name__ == '__main__':
    n = int(input("Enter the number of elements: "))
    numbers = []
    for i in range(n):
        numbers.append(float(input("Enter the element: ")))
    print("Mean: ", mean(numbers))
    print("Standard Deviation: ", std_dev(numbers))

Output