You've observed the following returns on Doyscher Corporation's stock over the past five years: -12 percent, 21 percent, 27 percent, 6 percent, and 17 percent. Average inflation rate over this period was 3.2 percent and the average T-Bill rate of the period was 4.3 percent.

What was the arithmetic average return on the stock over this five-year period?

What was the variance of returns over this period?

The Standard Deviation?

What was the Average Real return on stock?

what was the average nominal risk premium on stock?

Average real risk-free rate over this period?

Average real risk premium?