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The mean deviation about the median of t...

The mean deviation about the median of the following distribution is
`{:("Marks obtained",10,11,12,14,15),("Number of students",2,3,8,3,4):}`

Text Solution

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The correct Answer is:
B

Now, `M_(e )=((20+1)/(2)) " th item"=((21)/(2))=10.5` th item
`therefore M_(e )=12`
`therefore M.D. =(sumf_(i)d_(i))/(sum f_(i))=(25)/(20)=1.25`
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