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`{:("Class Interval",0.10,10-20,20-30,30-40,40-50),("Frequency",5,0,20,5,10):}`
What is the mean of the above frequency distribution?

A

25

B

26

C

27

D

28

Text Solution

Verified by Experts

The correct Answer is:
B

`therefore" "(N)/(2)=(50)/(2)=25`
Median group is 20 - 30.
Mean `=(sumfx)/(sumf)=(1300)/(50)=26`
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