A histogram is a graphical representation of the distribution of numerical data. It is an estimate of the probability distribution of a continuous variable (quantitative variable) and was first introduced by Karl Pearson. To construct a histogram, the entire range of values is divided into intervals (bins), and then the number of values that fall into each interval is counted. The height of each bar in the histogram represents the frequency (or relative frequency) of values in that bin. Histograms are widely used in statistics, data analysis, and image processing to visualize and analyze the distribution of data.
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