Factorial or Sequential Methods

The primary decision on which family of methods to consider can be based on the answers to two questions  

In the first case (1) and when the user wants to ensure optimum conditions for regression modeling and analysis of variance, the family of methods comprising statistical, experimental, and factorial designs should be consulted. In the second case (2) an appropriate procedure from the sequential method family should be selected. 

Some general hints may further assist the decision on which family to select. Certainly each single method will have its own special usefulness or its own prerequisites or conditions of application. 

2 the techniques are well suited for discontinuous (discretely adjustable) variables 

5 the optimum may be calculated by differentiation of the derived model functions 

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