1. Can you identify holiday periods or special events that cause the spikes in the data?

2. What holiday results in the maximum sales for this department?

The data is for weekly sales in the dry goods department at a Wal*Mart store in the Northeast. Peak values, I.e. spikes, usually occur at holiday periods. Week 1 is the first week of February 2003. To show continuity, week 1 of 2004 is represented as week 53 since week 53 represents the start of the 2004 fiscal year. Dollar values are adjusted in order to disguise true sales figures, but trends in the data are retained for analysis purposes. Note that for 2002-2003 data, Wal*Mart used 53 weeks for their fiscal year data.
										Week			Sales in $
										41			18000
										42			16800
										43			15200
										44			15000
45			13600
46			16000
47			12600
48			14800
49			16800
50			14800
51			15200
52			16000
53			15600
54			15600
55			15000
56			15700
57			15800
58			13800
59			12800
60			14400
61			15800
62			16000
63			12400
64			16200
65			17000
66			18600
67			16000
68			18000
69			19600
70			18600
71			18450
72			18000
73			18200
74			18600
75			16000
76			15200
77			16800
78			15800
79			17600
80			15800
81			15600
82			14200
83			16600
84			16100
85			14100
86			14400
87			14500
88			16900
89			17000
90			16000
91			17800