HistogramScale

As of Version 7.0, HistogramScale has been superseded by an optional argument hspec for the built-in Wolfram Language function Histogram.

HistogramScale

is an option of histogram functions that specifies the way in which the bar heights are to be scaled.

Details and Options

To use HistogramScale, you first need to load the Histograms Package using Needs["Histograms`"].
HistogramScale->Automatic does not scale the bar heights when there are equally sized intervals.
HistogramScale->Automatic scales the bar heights by the interval sizes when the intervals are not equally sized.
HistogramScale->True always scales the bar heights by the interval sizes regardless of whether the interval sizes are equal.
HistogramScale->k scales bar heights so that the bar areas or bar volumes sum to the positive number k.
HistogramScale->1 gives a probability density plot.

By default each bar height corresponds to the number of values in the interval:

Use HistogramScale->1 to get a probability density:

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