pes)s, loc=0, scale=1)
    Median of the distribution.
z?mean(%(shapes)s, loc=0, scale=1)
    Mean of the distribution.
zBvar(%(shapes)s, loc=0, scale=1)
    Variance of the distribution.
zLstd(%(shapes)s, loc=0, scale=1)
    Standard deviation of the distribution.
zminterval(confidence, %(shapes)s, loc=0, scale=1)
    Confidence interval with equal areas around the median.
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