The following table shows the nominal returns on Brazilian stocks and the rate of inflation. Year 2012 2013 2014 2015 2016 2017 Nominal Return (%) 0.4 -17.0 -15.0 -43.0 67.8 28.5 Inflation (%) 7.4 7.5 8.0 12.3 7.9 4.5 a. What was the standard deviation of the market returns? (Use decimals, 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 negative 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 %