Question

# The following frequency distribution showing the marks obtained by $$25$$ students in science subject. Find the mean using Assumed mean method.

A
90
B
91
C
92
D
93

Solution

## The correct option is C $$92$$Answer:- By shortcut MethodMarks(x) Students(f) d=x-A fd 903-2-6914-1-492=A50093616947214 $$\Sigma f = 25$$  $$\Sigma fd = 10$$ Mean = $$A+\cfrac{\Sigma fd}{\Sigma f}=92+\cfrac{10}{25} =\cfrac{92+0.4}=92.4 \simeq 92$$C)92Mathematics

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