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Question: The Appliance Centre sells a variety of electronic equipment and home appliances. For the last four years the following quarterly sales (in $ millions) were reported.
Quarter
Year
I
II
III
IV
2005
$5.30
$4.10
$6.80
$6.70
2006
4.8
3.8
5.6
6.8
2007
4.3
5.7
6
2008
4.6
6.4
5.9
Determine a typical seasonal index for each of the four quarters.
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Determine the mode for this distribution. Describe why you can't calculate the mean number of times using data in the table.
The linear correlation coefficient r is
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