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Following are the marks obtained by 9 st...

Following are the marks obtained by `9` student in a mathematics test
`50,69,20,33,53,39,40,65,59,`
The mean deviation from the median is

A

`9`

B

`10.5`

C

`12.67`

D

`14.76`

Text Solution

Verified by Experts

The correct Answer is:
C
Since ,mark obtained by `9 ` student in Mathematics are `50,69,20,33,53,39,40,65` and `59.`
Rewrite the given data in ascending order `20,33,39,40,50,53,59,65,69,`
Here `n=9`
`therefore " Median " =((9+1)/2)`term = `5` th term

`therefore MD=(114)/(9)` `= 12.67`
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