Tuesday, July 24, 2012

Histogram


Histograms are bar graphs without any space left between bars. They plot the frequency of a particular variable. The histogram above represents the frequency distribution of the heights of 25 students. The most common heights out of the 25 students were 62-64 inches and 64-66 inches. None of the students measured were under 58 inches tall. Histograms such as these are useful for organizing spatial data for mapping.

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