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Purpose

Karl Pearson

To roughly assess the probability distribution of a given variable by depicting the frequencies of observations occurring in certain ranges of values.

Mathematical definition

  • a function mi that counts the number of observations that fall into each of the disjoint categories (known as bins)
  • whereas the graph of a histogram is merely one way to represent a histogram.

Thus, if we let n be the total number of observations and k be the total number of bins, the histogram mi meets the following conditions:

Histogram

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