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

Annual Returns on Stocks A and B
Year	Stock A		Stock B		Portfolio AB
2012	14.5	%	22.5	%		%
2013	34.4	%	(34.1)	%		%
2014	(15.8)	%	44.1	%		%
2015	24.7	%	17.3	%		%
2016	15.6	%	27.9	%		%
Average return		%		%		%
Standard deviation		%		%		%