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If the mean of observations :7,8,9,11a...

If the mean of observations :`7,8,9,11`and `x` is `10`, then `x=`
`(a) 10`
`(b)10`
`(c)15`
`(d)13`

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RD SHARMA-DATA HANDLING 2-All Questions
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  5. Find the mean of first five natural numbers.

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  7. The mean of first seven even natural numbers is (a)7                ...

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  8. The mean of first six multiples of 5 is (a)3.5                      ...

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  9. The mean of 5 numbers is 4. If 1 is added to each number , then the ...

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  10. If the sum of 10 observations is 95, then their mean is (a) 9.5     ...

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  11. If the mean of  observations is 12 and the sum of the observations...

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  12. Find the median of the data 9, 12, 11, 10, 8, 9, 11.

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  13. The median of the data 5,7,9,10,11 is (a)7 (b)9 (c)11 (d)10

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  14. The mean of a data is 15 and the sum of the observations is 195. Th...

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  15. The median of 11 observations is 10. The number of possible observat...

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  16. If the mode of 22 ,\ 21 ,\ 23 ,\ 24 ,\ 21 ,\ 20 ,\ 23 ,\ 26 ,\ x and 2...

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  17. If the mean of 5, 7, x, 10, 5, and 7 is 7, then find the value of x.

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  19. The mean of 10, 15, 19, 30, 43, 69, and x is x. Find the median of the...

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