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If the mean of the following data is 5....

If the mean of the following data is 5.5, then x =
`{:(x_(i),2,4,6,8),(f_(i)"",3,5,6,x):}`

A

6

B

8

C

15

D

11

Text Solution

Verified by Experts

The correct Answer is:
A
We have,
Mean`= 5.5`
`rArr (6+20+36+8x)/(3+5+6+x)=5.5`
`rArr 62+8x=(14+x)xx 5.5 rArr 25x=15 rArr x=6`
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OBJECTIVE RD SHARMA-MEASURES OF CENTRAL TENDENCY-Section I - Solved Mcqs
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  2. If the arithmetic mean of the following data is 7, then a + b = {:(x...

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  3. The average of n numbers x(1),x(2), …,x(n) is M. If x(n) is replaced b...

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  6. If the mean of the following data is 5.5, then x = {:(x(i),2,4,6,...

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  7. The median of the data 5 , 6 , 7, 8 , 9 , 10 is "".

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  8. The Median of the following discrete series is {:(x(i),3,6,5,8,12,...

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