Let the mean and the variance | Statistics | JEE-MAIN 2022

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JEE MAIN 2022

29-06-22 S1

Question

Let the mean and the variance of 5 observations $x_1, x_2, x_3, x_4, x_5$ be $\frac{24}{5}$ and $\frac{194}{25}$ respectively. If the mean and variance of the first 4 observation are $\frac{7}{2}$ and a respectively, then $\left(4 a+x_5\right)$ is equal to:

Select the correct option:

A

13

B

15

C

17

D

18

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

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JEE Main

Mathematics

Medium

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