Which of the following forecasting approaches emphasizes group input and consensus building?

• A. Naive approach.
• B. Delphi method.
• C. Objective forecasting.
• D. Qualitative forecasting.

Answer: (B)

The Delphi method is a forecasting approach that specifically focuses on gathering input from a group of experts to reach a consensus. This technique involves multiple rounds of surveys or questionnaires, allowing participants to refine their opinions based on the feedback they receive from others in the group. The process typically continues until a clear consensus is achieved, making it particularly valuable for complex problems where individual insights need to be synthesized.

In contrast, the naive approach relies on simple historical data without the insight of a group; it typically predicts future values based solely on past values. Objective forecasting generally involves statistical techniques and quantitative data analysis, excluding subjective group inputs. Qualitative forecasting encompasses methods that rely on opinion and judgment, but it does not necessarily emphasize the structured consensus-building process that is central to the Delphi method. Ultimately, the collaborative nature of the Delphi method sets it apart, making it the correct choice in this context.