You've observed the following returns on Crash-n-Burn Computer's stock over the past five years:

6 percent, -

13 percent,

19 percent, 31 percent,

and 14 percent.

Suppose the average inflation rate over this period was 3.9 percent and the average T-bill rate over the period was 4.5 percent.

What was the average real return on Crash-n-Burn's stock?