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| Summary |
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 Two types of graphical representation of data are the histogram and the ogive. |
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| A histogram is a diagram which represents the class interval and frequency in the form of a rectangle. |
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| When the class intervals are unequal, each rectangle is constructed with the class interval as the base and the frequency density as the height. |
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| An ogive or a cumulative frequency curve is a 's' shaped curve. Points on the ogive have abscissae as the actual upper / lower limits for 'less than' / more than curve and ordinates as the cumulative frequencies. |
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Statistics: Graphical Representation
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