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    Seasonal Index

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    A plastics manufacturing performed a quarterly time series analysis for demands over the last five years (periods 1 through 20). The analysis resulted in the following trend equation and seasonal indexes:

    Based on the seasonal indexes, which quarter is expect to have 25% less demand than predicted by the trend line?

    a. 1
    b. 2
    c. 3
    d. 4

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    Solution Summary

    This solution is comprised of detailed analysis and step-by-step calculations of Seasonal Forecast Indexes in EXCEL. The solution provides students with a clear perspective of the given problems and the related aspects of forecast analysis.