The following table shows the nominal returns on Brazilian stocks and the rate of inflation.

a$.$ What was the standard deviation of the market returns?

Note: Use decimals, not percents, in your calculations. Do not round intermediate calculations. Enter your answer as a

percent rounded to $2$ decimal places.

b$.$ Calculate the average real return.

Note: 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.

a$.$ Standard deviation

b$.$ Average real return