Using the TGT Quarterly Sales (Target Corp.) data:

a. Create a line chart of sales. Do you see a trend? Do you see any seasonality? If so, what is the frequency?

b. Using the procedures detailed in the chapter, decompose the time series into the trend, seasonality, and irregular components.

c. Which of the time series methodologies discussed in the chapter would likely be the most appropriate for forecasting Target’s sales?

Data from Target Corp.

Target Corporation Quarterly Revenue and Net Income
Report Date	Fiscal Year	Fiscal Quarter	Revenue	Net Income
4/30/2006	2006	1	12,863	554
7/31/2006	2006	2	13,347	609
10/31/2006	2006	3	13,570	506
1/31/2007	2006	4	19,710	1,119
4/30/2007	2007	1	14,041	651
7/31/2007	2007	2	14,620	686
10/31/2007	2007	3	14,835	483
1/31/2008	2007	4	19,871	1,028
4/30/2008	2008	1	14,802	602
7/31/2008	2008	2	15,472	634
10/31/2008	2008	3	15,114	369
1/31/2009	2008	4	19,560	609
4/30/2009	2009	1	14,833	522
7/31/2009	2009	2	15,067	594
10/31/2009	2009	3	15,276	436
1/31/2010	2009	4	20,181	936
4/30/2010	2010	1	15,593	671
7/31/2010	2010	2	15,532	679
10/31/2010	2010	3	15,605	535
1/31/2011	2010	4	20,661	1,035
4/30/2011	2011	1	15,935	689
7/31/2011	2011	2	16,240	704
10/31/2011	2011	3	16,402	555
1/31/2012	2011	4	21,288	981
4/30/2012	2012	1	16,867	697
7/31/2012	2012	2	16,779	704
10/31/2012	2012	3	16,929	637
1/31/2013	2012	4	22,726	961
4/30/2013	2013	1	16,706	498
7/31/2013	2013	2	17,117	611
10/31/2013	2013	3	17,258	341
1/31/2014	2013	4	21,515	520
4/30/2014	2014	1	17,050	418
7/31/2014	2014	2	17,406	234
10/31/2014	2014	3	17,732	352
1/31/2015	2014	4	21,751	960
4/30/2015	2015	1	17,119	651
7/31/2015	2015	2	17,427	773
10/31/2015	2015	3	17,613	476
1/31/2016	2015	4	21,626	1,421
4/30/2016	2016	1	16,196	614
7/31/2016	2016	2	16,169	625
10/31/2016	2016	3	16,441	608
1/31/2017	2016	4	20,690	821
4/30/2017	2017	1	16,017	677
7/31/2017	2017	2	16,429	671
10/31/2017	2017	3	16,667	478
1/31/2018	2017	4	22,766	1102
4/30/2018	2018	1	16,781	717
7/31/2018	2018	2	17,776	799
10/31/2018	2018	3	17,821	616
1/31/2019	2018	4	22,977	798