2.3.Classification of Forecasts -Objective Purely random- Increasing No recognizable linear trend pattern ● ● ● ● ● ● Time Time Curvilinear Seasonal trend (quadratic, pattern plus exponential) linear growth ● ● pupwe Time Time Fig.2-2 Time Series PatternsFig. 2-2 Time Series Patterns 2.3. Classification of Forecasts - Objective