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Data analysis recipes: Choosing the binning for a histogram

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arxiv 0807.4820 v1 pith:PSJZWS5Q submitted 2008-07-30 physics.data-an astro-ph

Data analysis recipes: Choosing the binning for a histogram

classification physics.data-an astro-ph
keywords databinshistogramdecisionmadeobjectivealwaysanalysis
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Data points are placed in bins when a histogram is created, but there is always a decision to be made about the number or width of the bins. This decision is often made arbitrarily or subjectively, but it need not be. A jackknife or leave-one-out cross-validation likelihood is defined and employed as a scalar objective function for optimization of the locations and widths of the bins. The objective is justified as being related to the histogram's usefulness for predicting future data. The method works for data or histograms of any dimensionality.

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