Chocolate stock delivered an average annual return of 7.05% over a four year period, with annual returns of 3.4%, 46.3%, and 16.8% over the first three successive years.

1. What was the return earned during the fourth year in this holding period?

2. If you invested in the Chocolate stock over this four-year period, what is your average annual realized return (geometric mean) over the four-year period?

3. What is the standard deviation of returns for Pie Five Pizza over this four-year holding period?