JEE Math Practice Question
The mean and variance of 7 observations are 8 and 16 respectively. If two observations are 6 and 8, then the variance of the remaining 5 observations is :
- A.$${{92} \over 5}$$
- B.$${{134} \over 5}$$
- C.$${{536} \over {25}}$$
- D.$${{112} \over 5}$$
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