# FAQ: Learn Python - Exam Statistics - The Variance

This community-built FAQ covers the “The Variance” exercise in Codecademy’s lessons on Python.

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Hi, I’ve got 2 slightly different versions of the code here, Example 1 works, Example 2 gives a different number. Any help why this is would be much appreciated! (again, I’m sorry the indents don’t show up)
Thank you!
Alex

variance = 0
for score in scores:
variance += (average - score) ** 2
return variance / len(scores)

variance = 0
for score in scores:
variance += (average - score) ** 2
variance = variance / len(scores)
return variance

Hi Alex,

I tried the below code, although I’m not if it’s the best way!

``````def grades_variance(scores):