Here are the number of domestic f lights flown in each year from 2000 to 2016 (www.transtats.bts .gov/homepage.asp):

Year ................................... Flights
2000 ................................... 7,905,617
2001 ................................... 7,626,312
2002 ................................... 8,085,083
2003 ................................... 9,458,818
2004 ................................... 9,968,047
2005 ................................. 10,038,373
2006 ................................... 9,712,750
2007 ................................... 9,839,578
2008 ................................... 9,378,227
2009 ................................... 8,768,938
2010 ................................... 8,702,365
2011 ................................... 8,649,087
2012 ................................... 8,446,201
2013 ................................... 8,323,938
2014 ................................... 8,107,802
2015 ................................... 8,061,158
2016 ................................... 4,036,068

a) Find the correlation of Flights with Year.

b) Make a scatterplot and describe the trend.

c) Why is the correlation you found in part a not a suitable summary of the strength of the association?

d) In turns out that the value reported for 2016 was only for the period January to June. What should we have done with that point?