A farming cooperative s manager wants to forecast quarter grain shipments for each quarter of next

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A farming cooperative ’ s manager wants to forecast quarter grain shipments for each quarter of next year (Year 6), based on the data shown below (quantities are in metric tonnes):

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a. Determine quarterly seasonal relatives using the centred moving average method.
b. Deseasonalize the data, fit an appropriate model to the deseasonalized data, extend it four quarters, and finally reseasonalize die projections.
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Operations Management

ISBN: 978-0071091428

4th Canadian edition

Authors: William J Stevenson, Mehran Hojati

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