# Built-in way to compute coefficient of variation in pandas

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# Background

The coefficient of variation is:

defined as the ratio of the standard deviation to the mean

# Question

Is there a built-in function for this?

# Tried

I know I can do `df.std() / df.mean()`

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## 1 answer

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There's very little information to go off of here but to me the built-in function you need is division which is already built in to any language. Unless you are unable to use `df.std() / df.mean()`

for one reason or another, you could make a simple function yourself that divides the two numbers and returns the answer.

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