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Version 6 of Design-Expert
software offers many improvements over earlier versions. Changes
since version 5 include:
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- Additional experimental
designs (and capability for analysis)
- General (multilevel)
factorials for categorical factors
- Combinations of mixture
and/or process and/or categorical factors
- Up to 256-run, two-level
designs with optimum blocking options
- Taguchi orthogonal
arrays
- Box-Behnken (RSM) designs
for 9 and 10 factors
- Up to 24 components
for most mixture designs (not just screening)
- Power calculations
included in the sophisticated design evaluation tools.
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- More flexibility
- Ignore a row of data
while preserving the numbers
- Add new factors and
blocking to existing designs
- Change factors from
numerical to categorical and back
- Define your own generators
for fractional factorial designs
- Change models from
polynomial (RSM) to factorial and back
- Add integer power terms
to a model, for example: quartic
- Select terms for model,
error or to be ignored (allows analysis of split-plot or nested
designs)
- Take advantage of many
new user preferences, for example: change the significance threshold
to 0.01 or 0.1 "p-value" (default is 0.05).
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- More
help
- Greatly expanded context-sensitive
help
- Better guidance for
choice of model
- Annotated views to
provide explanation of statistical outputs.
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- Changes to analysis of variance
(ANOVA) output
- Prior
to viewing the ANOVA for two-level fractional factorials, a warning
pops up that model is aliased, and the opportunity is provided to
substitute aliased effects
- F-tests on individual
model terms
- Confidence intervals
on coefficients.
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- More graphs
- Predicted versus actual
with a 45 degree line
- Box-Cox plot for choosing
the best response transformation
- Interaction graphs
for RSM (as well as factorial designs)
- Propagation of error
(POE) for mixtures (as well as RSM): a big plus for those who are
in "six sigma" programs.
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- Enhancements to numerical
optimization
- Include categorical
factors
- Set factors at a constant
level.
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- Improved interface
- Standard
toolbar added for save, print, etc.
- 32-bit architecture
for maximum performance on Win 9x, NT and beyond
- Ability to export any
grid view as ASCII text, for example: the design layout.
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