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diff --git a/Doc/library/statistics.rst b/Doc/library/statistics.rst index 026f4aa..38a499a 100644 --- a/Doc/library/statistics.rst +++ b/Doc/library/statistics.rst @@ -696,6 +696,16 @@ of applications in statistics. Set *n* to 100 for percentiles which gives the 99 cuts points that separate the normal distribution into 100 equal sized groups. + .. method:: NormalDist.zscore(x) + + Compute the + `Standard Score <https://www.statisticshowto.com/probability-and-statistics/z-score/>`_ + describing *x* in terms of the number of standard deviations + above or below the mean of the normal distribution: + ``(x - mean) / stdev``. + + .. versionadded:: 3.9 + Instances of :class:`NormalDist` support addition, subtraction, multiplication and division by a constant. These operations are used for translation and scaling. For example: |