To get a visually of the frequency of data used
Why Do Social Scientists Use Frequency Tables Histograms Or Polygons?
Histograms or polygons are means of presenting data visually. Tables allow access to "raw" data, but don't necessarily communicate the meaning or impact of that data.
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A histogram might be useful for showing how the elements of a set of data are distributed among the values or categories measured.
A polygon might be useful for showing how one collection of measurements differs from another collection of measurements or from some standard. (I've seen such a chart used to plot status against several goals, for example.)
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A histogram might be useful for showing how the elements of a set of data are distributed among the values or categories measured.
A polygon might be useful for showing how one collection of measurements differs from another collection of measurements or from some standard. (I've seen such a chart used to plot status against several goals, for example.)