The standard deviation calculated using python

standard_deviation.py

# Standard deviation formula:
# SD = sqrt(sum(x - m)**2) / n

# x: the value in the dataset
# m: the mean of the dataset
# n: the number of values in the dataset

import math

N = [32, 30, 29, 33]

# Find the mean of the values

m = 0

for n in N:
    m += n

m /= len(N)

# Find the sum of the distance of each value to the mean

s = 0

for n in N:
    s += (n - m)**2

# Divide by the number of values

s /= len(N)

# Finally... take the square!

r = math.sqrt(s)

print(r)