What is demand forecasting in Operations Management? What are the various types of forecasting methods that you have studied in this course? Discuss the Delphi study as a forecasting tool. Explain the guidelines, its advantages and disadvantages of Delphi. Suggest some variants.

Demand forecasting in Operations Management refers to the process of predicting future customer demand for a product or service over a specific period. It is a crucial activity in ensuring the efficient management of resources, inventory, production planning, and overall operations. By forecasting demand accurately, organizations can optimize their operations, reduce costs, and improve customer satisfaction. Demand forecasting helps companies plan production schedules, order raw materials, manage inventory levels, and align their workforce with the expected demand.

Various types of forecasting methods are used in Operations Management, and these can broadly be classified into two categories: qualitative and quantitative methods.

Qualitative Methods are based on subjective judgment, intuition, and experience. These methods are generally used when there is little historical data available or when the demand is influenced by external factors that are difficult to quantify. Common qualitative methods include:

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