SD= Standard deviation

1. The records of an index performance in recent years are listed out below. Calculate the SD of the ROR sample. Year 2013 2014 2015 2016 2017 2018 ROR -10% 10% -20% 10% -10% 20% (Use the square root values if necessary:V2 = 1.41; 73 = 1.73;V5 = 2.24; providing result without computing steps will make no point. )