SciPy

scipy.stats.mstats.variation

scipy.stats.mstats.variation(a, axis=0)[source]

Computes the coefficient of variation, the ratio of the biased standard deviation to the mean.

Parameters:
a : array_like

Input array.

axis : int or None, optional

Axis along which to calculate the coefficient of variation. Default is 0. If None, compute over the whole array a.

Returns:
variation : ndarray

The calculated variation along the requested axis.

Notes

For more details about variation, see stats.variation.

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