| 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. |