Calculate the ex post standard deviation of returns for the following: 43 percent, 23 percent, 16 percent, 28 percent, 48 percent. (Round intermediate calculations to 4 decimal places, e.g. 31.2125 and final answer to 2 decimal places, e.g. 15.25\%.) Expost standard deviation Attempts: 0 of 3 used Using multiple attempts will impact your score. 25% score reduction after attempt 1