The following table shows the nominal returns on Brazilian stocks and the rate of inflation. Year 2012 Nominal Return (%) Inflation (%) 0.4 7.6 2013 -17.0 7.7 2014 -15.0 8.2 2015 2016 2017 -43.2 12.5 68.0 28.7 8.1 4.7 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 %