#
Selection of Variables

In
Multi-Regression Analysis
,
Discriminant Analysis
and
MT method
(
Multi-Variable Analysis
)
, there is a process to select effective variables.

(Some software does this process automatically.
Some software does not have such function.)

##
By the Ratio of Variance

This method is that to select the large number of the ratio of variance (F-value).

##
By Genetic Algorithm

If there are many variances selecting by hand is difficult.
Genetic Algorithm
helps us for such case.

##
By Design of Experiments

The method to use
Design of Experiments
to select variance is introduced in
MT System
(one of the methods of
Quality Engineering
)

It is using orthogonal array for two factors.
"0" means that "to use the variance in the analysis."
"1" means that "not to use the variance in the analysis."

"Experiment" in this way is that the combination of variance in the analysis.

After the "experiment", we find the effective variance.

Statistical Way of Making Hypothesis

Selection of Methods

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