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FORECASTING FUNDAMENTALS

Forecast: A prediction, projection, or estimate of some future activity, event, or occurrence. Types of Forecasts * Economic forecasts * Predict a variety of economic indicators, like money supply, inflation rates, interest rates, etc. * Technological forecasts * Predict rates of technological progress and innovation. * Demand forecasts * Predict the future demand for a company’s products or services.

Since virtually all the operations management decisions (in both the strategic category and the tactical category) require as input a good estimate of future demand, this is the type of forecasting that is emphasized in our textbook and in this course. TYPES OF FORECASTING METHODS

Qualitative methods: These types of forecasting methods are based on judgments, opinions, intuition, emotions, or personal experiences and are subjective in nature. They do not rely on any rigorous mathematical computations.

Quantitative methods: These types of forecasting methods are based on mathematical (quantitative) models, and are objective in nature. They rely heavily on mathematical computations.

QUALITATIVE FORECASTING METHODS

Qualitative Methods

Delphi
Method

Approach in which consensus agreement is reached among a group of experts

Sales Force Composite

Approach in which each salesperson estimates sales in his or her region
Executive
Opinion

Approach in which a group of managers meet and collectively develop a forecast
Market
Survey

Approach that uses

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