Fill in the missing information in the following table. Assume that Portfolio AB is 50 percent invested in Stock A. (Negative values should be indicated by a minus sign. Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places. Omit the "%" sign in your response.)

Stock A Stock B Stock AB

2009 13.5 % 23.5 % %

2010 36 % 36.5 % %

2011 19 % 46.5 % %

2012 25.5 % 16.5 % %

2013 14 % 25.5 % %

Average return % % %

Standard deviation % % %