a : array_like
Calculate average and standard deviation of these values.
axis : int, optional
Axis along which the statistics are computed. The default is
to compute them on the flattened array.
weights : array_like, optional
An array of weights associated with the values in a. Each
value in a contributes to the average according to its
associated weight. The weights array can either be 1-D (in
which case its length must be the size of a along the given
axis) or of the same shape as a. If weights=None, then all
data in a are assumed to have a weight equal to one.
with_mean : bool, optional, defaults to True
with_std : bool, optional, defaults to True
Compute standard deviation if True.
ddof : int, optional, defaults to 0
It means delta degrees of freedom. Variance is calculated by
dividing by n - ddof (where n is the number of
elements). By default it computes the maximum likelyhood
estimator.
Returns
——-
average, std
Return the average and standard deviation along the specified
axis. If any of them was not required, returns None instead
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