Histogram - Wolfram projects

Histogram

When reading a histogram, it is important to understand exactly what the vertical scale is measuring and how that is affected by the choice of bins. Here we consider three common choices for the height of a bin: count, probability, and probability density.

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Choosing the bin sizes for a histogram can be surprisingly tricky. If there are too few bins, it is hard to pick out the underlying distribution of the data. If there are too many bins, the result is either unpleasant to look at because the bins have deteriorated into sticks or noise in the data is not sufficiently averaged out, also making it hard to see the underlying distribution. Here we present several methods for selecting (uniform-width) bins for a histogram.

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