Confidence interval with equal areas around the median
alpha : array_like float in [0,1]
Probability that an rv will be drawn from the returned range
arg1, arg2, ... : array_like
The shape parameter(s) for the distribution (see docstring of the instance object for more information)
loc : array_like, optional
location parameter (default = 0)
scale : array_like, optional
scale paramter (default = 1)
a, b : array_like (float)
end-points of range that contain alpha % of the rvs
scipy.stats.rv_discrete.std
scipy.stats.norm
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