
Concept explainers
a.
To explain:The difference between aggregate forecast and single item forecast.
Introduction: The aggregate forecastand single item forecast are types of subjective method of
b.
To explain:The difference between short-term forecast and long-term forecast.
Introduction: The short-term forecasting process is used in the periods within a year with a normal range of 1-3 months. The long-term forecasting is the method of analyzing and assessingtrends that can be recognized through scanning a range of data sources with periods of almost two-years.
c.
To explain:The difference between casual forecast and naive forecast.
Introduction: Naive forecasting is the estimation method in which theactual of the last period are used as the prediction for this period, without any adjustment or attempt to determine causal variables. It is only used to compare the predictions produced by superior or advanced methods.
Casual forecasting is the technique of assessment relying on the premise that the dependent variable has a connection of cause and effect with independent variables.

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Chapter 2 Solutions
Production and Operations Analysis, Seventh Edition
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