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If the mean of 9, 10, 15, x, 6, 8, and 1...

If the mean of 9, 10, 15, x, 6, 8, and 12 is 11, then the median of the scores.

A

4

B

10

C

13

D

5

Text Solution

Verified by Experts

The correct Answer is:
B
`(9+10+15+x+6+8+12)/7=11` (given) ltbr `(60+x)/7=11`
`x=77-60`
`x=17`
`:.` Descending order :
6, 8, 9, 10, 12, 15, 17
`:.` Median `=10`
Hence, the correct option is (b).
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