16 - Calculate the standard deviation for Ditto Copier Center's returns with info given below: 0.2 $50 0.5 $20 0.3 $15 a) 15.3 b) 10.1 12.92 11.3 17.6 Bo brak e 18 - Calculate the standard deviation for the Ditto Copier Center's returns with the info below: 0.2 $50 0.5 $20 0.3 $15 a) 23 b) 36 30 d) e 18 e) 13 Bo brak