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  3. the accompanying data file contains monthly observ

The accompanying data file contains monthly observations for 5 years. a. Calculate the 12-month centered moving average. (Do...

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Basic Math

The accompanying data file contains monthly observations for 5years.

a. Calculate the 12-month centered movingaverage. (Do not round intermediate calculations. Roundyour answers to 2 decimal places.)


b. Calculate the ratio-to-moving average.(Do not round intermediatecalculations.Round your answers to 2 decimalplaces.)

YearJanFebMarAprMayJunJulAugSeptOctNovDecCMA:ybarRate- to moving Average:y/ybar
1283019102810393126281822
2202139243439133216311312
3201137382537133028371320
4293325112138281223121333
5202912182534372317141517

c-1. Calculate the seasonal indices for Apriland November. (Do not round intermediatecalculations.Round your answers to 4 decimalplaces.)

Adjusted Seasonal Index
April
November


c-2. Interpret the seasonal index for April.(Do not round intermediatecalculations.Round your answer to 2 decimalplaces.)
The Series is __________% above or below??? its average monthlylevel.


c-3. Interpret the seasonal index for November.(Do not round intermediate calculations.Round your answer to 2 decimal places.)

The series is __________% above or below??? its average monthlylevel.

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