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JEE MATHEMATICS MCQ: STATISTICS

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Application +4 | -1

If the mean of 15 observations is 12 and standard deviation is 3. If 12 is replaced by 10 (in data) then the new mean is

\mu

and variance is

\sigma^2

then what is the value of

15\left(\mu+\mu^2+\sigma^2\right)

View answer and explanation

Correct option: A

2429

Option A (2429) is correct because it is the result of calculating

15(\mu+\mu^2+\sigma^2)

after replacing 12 with 10 in the data and finding the new mean and variance.

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