What is the historical average return? b) What is the variance of the returns on the Index from 2000 to 2009? c) What is the standard deviation of the returns on the Index from 2000 to 2009? Year End 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 Index Realized Return 23.6% 24.7% 30.5% 9.0% -2.0% -17.3% -24.3% 32.2% 4.4% 7.4%