Question 52

Executive opinion and Customer opinions are subjective forecasting methods.

Both executive opinion and customer opinions rely on the insights and judgments of individuals rather than on historical data or statistical techniques, making them subjective methods of forecasting.

A) Decomposition

Decomposition is a quantitative forecasting method that involves breaking down data into its component parts (trend, seasonality, and irregularity) to analyze and predict future values. This method relies on historical data and is objective in nature, thus not fitting the criteria for subjective forecasting.

B) Executive opinion

Executive opinion is a subjective forecasting method that gathers insights and predictions from executives or experienced individuals within an organization. This method relies heavily on personal judgment and experience rather than on numerical data, making it inherently subjective.

C) Market testing

Market testing involves gathering data from specific market scenarios to predict future performance. While it may incorporate some subjective elements based on consumer reactions, it primarily relies on empirical data and insights gathered from real market conditions, making it less subjective than other methods.

D) Exponential smoothing

Exponential smoothing is a quantitative forecasting technique that uses weighted averages of past observations to predict future values. As it is based on mathematical calculations and historical data, it is considered an objective method rather than subjective.

E) Customer opinions

Customer opinions are another subjective forecasting method, as they rely on the perceptions and feedback of customers regarding products or services. This approach is based on individual feelings and thoughts, which can vary widely and do not have a statistical basis.

Conclusion

Executive opinion and customer opinions are the correct answers as they both rely on individual judgments and perceptions rather than objective data. In contrast, the other options, such as decomposition and exponential smoothing, are grounded in statistical analysis and historical data, which makes them objective forecasting methods. Thus, only B and E qualify as subjective forecasting methods.