Problem 7-8 Standard deviation of returns The following table shows the nominal retums on Brazilian stocks and the rate of inflation. Year Nominal Return (%) Inflation (%) 2012 0.3 7.1 2013 -13.0 7.2 2014 -11. 7.7 2015 -42.7 12.8 2016 67.5 7.6 2017 28.2 4.2 4. What was the standard deviation of the market returns? (Use diecimals, not percents, In your calculations. Do not round Intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) Standard deviation % b. Calculate the average real return. (A negatlve answer should be Indicated by a minus sign. Do not round Intermediate calculations. Enter your answer as a percent rounded to 2 decimal places) Average real return %