The ozone hole is a region in the stratosphere over the Antarctic with exceptionally depleted ozone. The size is not constant over the year, the following table gives the average ozone hole size from 1979-2015. Year Area (millions of km ) Year Area (millions of km ?) Year Area (millions of km ?) 1979 0.1 1992 22.3 2005 24.4 1980 1.4 1993 24.2 2006 26.6 1981 0.6 1994 23.6 2007 22 1982 4.8 1996 22.7 2008 25.2 1983 7.9 1997 22.1 2009 22 1984 10.1 1998 25.9 2010 19.4 1985 14.2 1999 23.2 2011 24.7 1986 11.3 2000 24.8 2012 17.8 1987 19.3 2001 25 2013 21 1988 10 2002 12 2014 20.9 1989 18.7 2003 25.8 2015 25.6 1990 19.2 2004 19.5 1991 18.8 a) Make a histogram of the distribution of the size of the ozone hole. (7 marks) b) Describe the overall shape of the distribution. (5 marks) c) Based on the shape of the distribution, do you expect the mean to be close to the median, less than the median, or greater than the median? Give an explanation to your answer. (5 marks) d) Calculate the mean and the median. (8 marks)