Class Interval Frequency 0 4 10 5 9 15 10 14 18 15 19 20 20 24 14 Find the class mark for the class interval 10 14 .

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Class Mark, Class Limit and Class Size

Class - Inter...

Question

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Solution

The correct option is D 12
The midpoint of a class is called its class mark (or midpoint of class interval). It is obtained by adding the two limits and dividing by 2.

Class Mark = $\frac{(10 + 14)}{2}$
= 12

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