If mean and standard deviation of 5 observations are 10 and 3... | Statistics | JEE Main

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JEE MAIN 2019

10-01-2019 S2

Question

If mean and standard deviation of 5 observations $x_1, x_2, x_3, x_4, x_5$ are 10 and 3 , respectively, then the variance of 6 observations $x_1, x_2, \ldots, x_5$ and -50 is equal to.

Select the correct option:

A

586.5

B

582.5

C

509.5

D

507.5

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

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