1. What is the yield to maturity for a bond with an annual coupon of 10% that has 8 years until maturity and sells for $1,000?
2. What is the standard deviation of a portfolio's returns if the mean return is 15%, the variance of returns is 184, and there are three stocks in the portfolio?
3. What is the standard deviation of returns of a 4-stock portfolio (each stock being equally weighted) that produced returns of 20%, 20%, 25%, and 30%?