Below are stock prices and dividends for Perfect Option Football Corporation for 2004-2008: Price Dividend 2004 $49.87 2005 $52.50 $1.00 2006 $46.00 $0.80 2007 $54.00 $2.35 2008 $57.00 $1.32 Calculate the standard deviation for Perfect Option stock over the time period. Submit Answer format: Percentage Round to: 2 decimal places (Example: 9.24%, % sign required. Will accept decimal format rounded to 4 decimal places (ex: 0.0924))