Graphical, mathematical (symbolic), physical, or verbal
representation or simplified
version of a
concept, phenomenon,
relationship,
structure,
system, or an aspect of the real world. The
objectives of a model include (1) to facilitate understanding by eliminating unnecessary
components, (2) to aid in
decision making by simulating 'what if' scenarios, (3) to explain,
control, and predict
events on the basis of past observations. Since most
objects and phenomenon are very complicated (have numerous
parts) and much too
complex (parts have dense interconnections) to be comprehended in their entirety, a model contains only those
features that are of
primary importance to the model
maker'spurpose. Models
range from simple sketches to computer ...
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