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Class Interval

Find the clas...

Question

Find the class marks of classes 10-25 and 35-55.

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Solution

Class Mark = $\frac{U p p e r L i m i t + L o w e r L i m i t}{2}$

Class Mark of 10-25 = $\frac{25 + 10}{2}$ = $\frac{35}{2}$ = 17.5

Class mark of 35-55 = $\frac{35 + 55}{2}$ = $\frac{90}{2}$ = 45

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