Returns for the Dayton Company over the last 3 years are shown below. What's the standard deviation of the firm's returns? (Hint: This is a sample, not a complete population, so the sample standard deviation formula should be used.)
|
Year
|
Return
|
|
2011
|
21.00%
|
|
2010
|
-12.50%
|
|
2009
|
17.50%
|