Chapter 14.2, Problem 14.18ACB

Foreign fish production. Overfishing and pollution of U.S. coastal waters have resulted in an increased dependence by the United States on the fishing grounds of other countries. The table below describes the annual fish catch (in thousands of metric tons) in all fishing areas of Peru and Chile for the years 2000 to 2013

Year	Chile	Peru
2000	4,692	10,665
2001	4,363	7,990
2002	4,817	8,775
2003	4,176	6,100
2004	5,584	9,627
2000	5,020	9,416
2006	4,971	7,046
2007	4,636	7,250
2008	4,398	7,406
2009	4,247	6,959
2010	3,381	4,350
2011	4,018	8,341
2012	3,644	4,021
2013	2,604	5,900

a. Compute an exponentially smoothed series for both Chile and Peru, using a smoothing coefficient of w = .5.

b. Plot both actual series and both smoothed series on the same graph. Describe the differences in variation of catches over time between the two countries. For example, do they move up and down together over time?