TSLAZ had returns of 0,0.07,0.12 and 0 during the last four "periods". Can you calculate the standard deviation of the returns? Type your answer as decimal (i.e. 0.052 and not 5.2% ). Round your answer to the nearest four decimals if needed. TSLAZ had returns of 0,0.07,0.12 and 0 during the last four "periods". Can you calculate the standard deviation of the returns? Type your answer as decimal (i.e. 0.052 and not 5.2% ). Round your answer to the nearest four decimals if needed