Question: What is Mik's standard deviation? begin{tabular}{cc} hline PROBABILITY & RETURNS hline 0.15 & 7% 0.50 & 3% 0.20 & 17% 0.15
What is Mik's standard deviation?

\begin{tabular}{cc} \hline PROBABILITY & RETURNS \\ \hline 0.15 & 7% \\ 0.50 & 3% \\ 0.20 & 17% \\ 0.15 & 13% \\ \hline \end{tabular}
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