pg_0153
5.
Process Improvement
5.4.
Analysis of DOE data
Contents of
this section
Assuming you have a starting model that you want to fit to your
experimental data and the experiment was designed correctly for your
objective, most DOE software packages will analyze your DOE data.
This section will illustrate how to analyze DOE's by first going over the
generic basic steps and then showing software examples. The contents
of the section are:
DOE analysis steps
q
Plotting DOE data
q
Modeling DOE data
q
Testing and revising DOE models
q
Interpreting DOE results
q
Confirming DOE results
q
DOE examples
Full factorial example
r
Fractional factorial example
r
Response surface example
r
q
Prerequisite
statistical
tools and
concepts
needed for
DOE
analyses
The examples in this section assume the reader is familiar with the
concepts of
ANOVA tables (see
Chapter 3
or
Chapter 7
)
q
p-values
q
Residual analysis
q
Model Lack of Fit tests
q
Data transformations for
normality
and
linearity
q
5.4. Analysis of DOE data
http://www.itl.nist.gov/div898/handbook/pri/section4/pri4.htm [5/7/2002 4:02:06 PM]
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