Find the average return and standard deviation of an equal-weighted (1/3 in each) portfolio consisting of the three stocks. Explain how a portfolios standard deviation can be lower than any of the three stocks standard deviations that make up that portfolio. Year LAX return UWL return WIS return 2013 5% 2% 10% 2014 10% 4% 12% 2015 -3% 3% 8% 2016 12% -2% 9% 2017 1% 5% 15%