Data Table: Year1234 Return_(%)1020-515

Consider an investment with the returns over 4 years as shown here: a. What is the compound annual growth rate (CAGR) for this investment over the 4 years? b. What is the average annual return of the investment over the 4 years? c. Which is a better measure of the investment's past performance? If the investment's returns are independent and identically distributed, which is a better measure of the investment's expected return next year