Freedman–Diaconis rule
From Infogalactic: the planetary knowledge core
In statistics, the Freedman–Diaconis rule, named after David A. Freedman and Persi Diaconis, can be used to select the size of the bins to be used in a histogram.[1] The general equation for the rule is:
where is the interquartile range of the data and
is the number of observations in the sample
Other approaches
Another approach is to use Sturges' rule: use a bin so large that there are about non-empty bins (Scott, 2009).[2] This works well for n under 200, but was found to be inaccurate for large n.[3] For a discussion and an alternative approach, see Birgé and Rozenholc.[4]
References
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