Sunday, July 10, 2011

Histogram




Histograms are summary graphs that shows a count of data points that fall in various ranges. It displays a rough approximation of the frequency of distribution of the data. The frequencies are displayed as adjacent rectangles, built on specific intervals, in which the area corresponds to the frequency of the observations in the interval. The histogram above measures the frequency of a range of heights in a 25 student statistical representation. The frequency is the number of students that fell into a specific height class. This histogram is showing the frequency, number of occurrences, of certain ranges of heights between 25 students.

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