Variance and Standard Devaition of Array

What is variance?

What is deviation?

import numpy

from matplotlib import pyplot as plt

import matplotlib

num=[39,116,24,122,83,59,77,97,88,86,95,110,61]

x=sorted(num)

print("array elements")

for l in x:

print(l)

pass

print("Standard deviation ",numpy.std(x))

print("Variance",numpy.var(x))

plt.hist(x,max(num))

plt.show()