The probability distribution of a random variable $X$ is given below.
$X = x$ $0$ $1$ $2$ $3$ $P(X = x)$ $\frac{1}{10}$ $\frac{2}{10}$ $\frac{3}{10}$ $\frac{4}{10}$
Then the variance of $X$ is
| $X = x$ | $0$ | $1$ | $2$ | $3$ |
|---|---|---|---|---|
| $P(X = x)$ | $\frac{1}{10}$ | $\frac{2}{10}$ | $\frac{3}{10}$ | $\frac{4}{10}$ |
Then the variance of $X$ is
- A$1$
- B$2$
- C$3$
- D$4$
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