The past five monthly returns for Kohls are $3\mathrm{.}58$ percent, $3\mathrm{.}72$ percent, $-1\mathrm{.}72$ percent, $9\mathrm{.}27$ percent, and $-2\mathrm{.}60$ percent. Compute the standard deviation of Kohls' monthly returns.

Note: Do not round intermediate calculations and round your final answer to $2$ decimal places.

Standard deviation

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