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

question 39

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

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