7. The geometric average of -9%, +20%, -5% and +15% rates of returns is _________.

8. Your investment has a 20% chance of earning a 25% rate of return, a 50% chance of earning a 12% rate of return and a 30% chance of losing 10%. What is your expected return on this investment? What is the standard deviation? What is the coefficient of variation?

9. If you are promised a nominal return of 10% on a one year investment, and you expect the rate of inflation to be 3.0%, what real rate do you expect to earn?