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The mean of the numbers a, b, 8, 5, 1...

The mean of the numbers a, b, 8, 5, 10 is 6 and the variance is 6.80. Then which one of the following gives possible values of a and b? (1) `a""=""0,""b""=""7` (2) `a""=""5,""b""=""2` (3) `a""=""1,""b""=""6` (4) `a""=""3,""b""=""4`

A

`a=0,b=7`

B

` a= 5,b=2`

C

`a=1,b=6 `

D

`a=3, b=4`

Text Solution

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The correct Answer is:
D
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