# Questions & Answers of Standard Deviation

## Weightage of Standard Deviation

Total 1 Questions have been asked from Standard Deviation topic of Probability subject in previous GATE papers. Average marks 1.00.

If the difference between the expectation of the square of a random variable $\left(E\left[{X}^{2}\right]\right)$ and the square of the expectation of the random variable ${\left(E\left[X\right]\right)}^{2}$ is denoted by R , then