Q:

Python program to find the variance

belongs to collection: Python basic programs

mahmoud2506
Save to bookmark
|
2022-05-19
|
  258 
0

Variance tells us about the divergence and the inconsistency of the sample. So in this python article, we are going to build a function.

Mathematically we define it as:

variance in Python

Python programming, examples, Python programming examples,
login and add your own answer to this question

All Answers

mahmoud2506
2022-05-19
need an explanation for this answer? contact us directly to get an explanation for this answer

So here is the code:

def variance(X):
    mean = sum(X)/len(X)
    tot = 0.0
    for x in X:
        tot = tot + (x - mean)**2
    return tot/len(X)

# main code
#  a simple data-set 
sample = [1, 2, 3, 4, 5] 
print("variance of the sample is: ", variance(sample))

sample = [1, 2, 3, -4, -5] 
print("variance of the sample is: ", variance(sample))

sample = [10, -20, 30, -40, 50] 
print("variance of the sample is: ", variance(sample))

Output:

ariance of the sample is:  2.0
variance of the sample is:  10.64
variance of the sample is:  1064.0

need an explanation for this answer? contact us directly to get an explanation for this answer

total answers (1)

Python basic programs
This question belongs to these collections

Similar questions

need a help?

find thousands of online teachers now
Python program Tower of Hanoi (modified)... >>
<< Python program to find standard deviation...