12. Portfolio Variance (LO2, CFA5). Use the following information to calculate the expected return and standard deviation of a portfolio that is 50 percent invested in 3 Doors, Inc., and 50 percent invested in Down Co. 3 Doors, Inc. Expected Return, E(R) 14% 42 Standard Deviation Correlation Down Co. 10% 31 0.10 | 13. More Portfolio Variance (LO4, CFA3). In problem 12, What is the standard deviation if the correlation is +1? 0? -1? As correlations declines from +1 to -1 here, what do you see happening to portfolio volatility? Why? 14. Minimum Variance Portfolio (LO4, CFA4). In problem 12, what are the expected return and standard deviation on the minimum variance portfolio?