When rectangles are drawn with the areas proportional to the frequencies of respective class intervals, what is the diagram called?

Bar graph

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Frequency polygon

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Pie graph

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Histogram

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Solution

The correct option is D Histogram
The histograms are diagrams which represent the class interval and the frequency in the form of a rectangle.
There will be as many adjoining rectangles as there are class intervals.
So, when rectangles are drawn with the areas proportional to the frequencies of respective class intervals, the diagram called Histogram.
Therefore, option D is correct.

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