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

Year Nominal Return $(\%)$ Inflation $(\%)$

$20150\mathrm{.}16\mathrm{.}2$

$2016-14\mathrm{.}06\mathrm{.}3$

$2017-12\mathrm{.}06\mathrm{.}8$

$2018-41\mathrm{.}811\mathrm{.}1$

$201966\mathrm{.}66\mathrm{.}7$

$202027\mathrm{.}33\mathrm{.}3$

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.

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.