Calculate the Standard Deviation of X for the Probability Distribution $$\begin{array} { | c | c | c | c | c | } \hline x & 1 & 2 & 3 & 4 \\\hline P ( X = x ) & 0.2 & 0.3 & 0.3 & 0.2 \\\hline\end{array}$$

Multiple Choice

Calculate the standard deviation of X for the probability distribution. $$\begin{array} { | c | c | c | c | c | } \hline x & 1 & 2 & 3 & 4 \\\hline P ( X = x ) & 0.2 & 0.3 & 0.3 & 0.2 \\\hline\end{array}$$ Round your answer to two decimal places if necessary.

A) 1.05
B) 1
C) 1.02
D) 2.5
E) 5