Seattle has a reputation of being a very rainy city. The total amount of rain for fourteen Septembers is listed below:
Year Average
2003 0.81
2004 1.95
2005 0.99
2006 1.33
2007 2.20
2008 0.67
2009 2.30
2010 3.91
2011 1.12
2012 0.16
2013 5.26
2014 2.73
2015 1.46
2016 1.12
How do you calculate the number of classes and class width for this set of data? What would be class width and number of classes in this example.