The following are recent prices of Hawthorne Corporation common stock.

month	stock price
April	$57
May	$57
June	$45
July	$63.67
August	$62.46
September	$54.56
October	$54.32

Based on the monthly holding-period returns, what is the standard deviation for this stock? SET YOUR CALCULATOR TO 4 DECIMAL PLACES AND ROUND TO 2 DECIMAL PLACES AT THE END. DO NOT ENTER THE % SYMBOL. IF YOUR ANSWER IS 5.6222 ENTER IT AS 5.62. DO NOT ENTER YOUR ANSWER AS 0.0562.