A plastics manufacturer 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:
Ŷ = 920.0 + 22.6t Based on the seasonal indexes, which quarter is expected to have 25% less demand than predicted by the trend line?

Question

A plastics manufacturer 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:
Ŷ = 920.0 + 22.6t  Based on the seasonal indexes, which quarter is expected to have 25% less demand than predicted by the trend line?

Quizplus · Accepted Answer

The Answer of A plastics manufacturer 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:
Ŷ = 920.0 + 22.6t  Based on the seasonal indexes, which quarter is expected to have 25% less demand than predicted by the trend line?

A Plastics Manufacturer Performed a Quarterly Time Series Analysis for Demands