The Table Below Is the Probability Table for a Random

Short Answer

The table below is the probability table for a random variable X. Find the standard deviation of X. $$\begin{array} { l | l l l l l l } \text { Outcome } & - 3 & - 2 & - 1 & 1 & 2 & 3 \\\hline \text { Probability } & 0.1 & 0.1 & 0.4 & 0.3 & 0.05 & 0.05\end{array}$$ Enter just a real number rounded off to two decimal places.