Portfolio Deviations from benchmark annual returns over a 12-year period: Year 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 % -7.14 1.62 2.48 -2.59 9.37 -0.55 -0.89 -9.19 -5.11 -0.49 6.84 3.04 a) Calculate the frequency with 4 intervals and cumulative frequency for the portfolios deviations. b) Construct a histogram using the data c) Calculate the standard deviation (tracking risk) of the portfolio