Using the weekly closing stock price $(S_i)$ data in the table below, find the stock price volatility per annum in decimal format $($not in $\%).$ For calculating returns, use the $LN(\frac{S_i}{S_{i-1}})$ approach.

Enter your answer rounded to four decimal places. For example, if your calculation results in $0\mathrm{.}1234567,$ you only need to enter $0\mathrm{.}1234$

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