The class mark for a class interval while calculating the mean is its upper limit.

True

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False

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Solution

The correct option is B
False

The class mark is the midpoint of the lower and upper limits of a class. It is calculated by taking the average of the upper and lower limits i.e.
Class mark = $\frac{U p p e r l i m i t + L o w e r l i m i t}{2}$

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State True or False : The class mark for a class interval while calculating the mean is its upper limit.

The classmark for a class interval while calculating the mean is its upper limit.

1 / 2 (l o w e r + U p p e r l i m i t) ?

Class mark of a certain class interval is 30 and its lower class limit is 20. Then its upper class limit is

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