graphical evaluation and review technique (GERT) or GERT
A network analysis technique that allows for probability distributions of activity durations and also conditions under which some activities may not be carried out. See: critical path method, network analysis, program evaluation and review technique.
The use of visual information to predict sales patterns typically involves plotting information in a graphical form. It is relatively easy to convert a spreadsheet into a graph that conveys the information visually. Trends and patterns of data are easier to spot, and extrapolation of previous demand can be used to predict future demands.