A method for forecasting sales data when a definite upward or
downward pattern exists.
Seasonal Adjustment
Seasonal models take into account the variation of demand from season to season.
Adjustments can be made to a baseline forecast to predict the impact of a seasonal
demand.
Decomposition
A method of forecasting where time series data are separated into up to three
components: trend, seasonal, and cyclical
Graphical Methods
Plotting information in a graphical form. It is relatively easy to convert a
spreadsheet into a graph that conveys the information in a visual manner
Econometric Modeling
A set of equations intended to be used simultaneously to capture the way in which
dependent and independent variables are interrelated.
Life Cycle Modeling
A quantitative forecasting technique based on
applying past patterns of demand data covering
introduction, growth, maturity, saturation, and
decline of similar products to a new product
family”
Based on subjective information such as intuition or informed opinion
Qualitatives
Expert Opinion
Experts give their views on current trends & likely future developments that may have an
impact on the general economy or a specific industry or market.
Market Research
Conducted thru surveys
Focus Groups
Consists of panels of customers who are asked to provide their opinions
about a product or service
Historical Analogy
The sale of new product or service is compared with the sales of a previous
similar product or service.
Delphi Method
The sale of new product or service is compared with the
sales of a previous similar product or service.
Panel Consensus
A group of people provides opinion about the future & a
facilitator brings the group to a consensus
Based on historical information that is usually available within the company