Question: 23. Oakland passengers 2013 The scatterplot below shows the number of passengers at Oakland (CA) airport month by month since 1997. (www.oaklandairport.com) a) Describe the

23. Oakland passengers 2013 The scatterplot below shows the number of passengers at Oakland (CA) airport month by month since 1997. (www.oaklandairport.com)

Passengers 1,200,000 H 800,000 1995 2000 2005 2010 2015 Year

a) Describe the patterns in passengers at Oakland airport that you see in this time plot.

b) Until 2009, analysts got fairly good predictions using a linear model. Why might that not be the case now?

c) If they considered only the data from 2009 to the present, might they get reasonable predictions into the future?

Passengers 1,200,000 H 800,000 1995 2000 2005 2010 2015 Year

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