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Question 22
For drawing a frequency polygon of a continuous frequency distribution, we plot the points whose ordinates are the frequencies of the respective classes and abcissae are, respectively:

A) Upper limits of the classes
B) Lower limits of the classes
C) Class marks of the classes
D) Upper limits of preceding classes

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Solution

The answer is C.
Class marks i.e. the mid-point of the classes are abscissa of the points, which we plot for frequency polygon.

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