# 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.

###### Education

- MSc, Osmania University
- MSc, Indian Institute of Technology - Roorkee (I.I.T.-ROORKEE)
- BSc, Banaras Hindu University

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