Question: Given the data of Exercise 18.13, (a) determine the monthly seasonal indexes for January through December, then (b) use these indexes to deseasonalize the original

Given the data of Exercise 18.13, (a) determine the monthly seasonal indexes for January through December, then (b) use these indexes to deseasonalize the original time series.
In exercise

2007 4.574.75.0 5.0 4.4 2008 5.44.9 2009 5.85.8 6.6 6.5 6. 6.7 5.3 5.6 5.4 5.4 2007 4.7 2008 5.55.4 2009 6.7 6.7 4.9 4.6 5.4 4.8 5.2 5.7 6.3 5.3 6.3 6.9 74 6.6 7.4

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