Assume these are the stock market and Treasury bill returns for a 5-year period: Year
Stock Market Return (%) T-Bill Return (%)
2011 −34.63 3.90
2012 31.40 0.30
2013 14.86 0.25
2014 3.08 0.10
2015 19.26 0.12
What was the average risk premium? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.)
What was the standard deviation of the risk premium?