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PASS
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| Design of Experiments
Nine design of experiment procedures are available in
PASS 2008. In each case the design data generated can be produced in a
spreadsheet as well as the output window. The design rows may also be
output in standard or random order.
The following design procedures are available:
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Two-Level Designs - This program
generates a 2k factorial design for up to seven factors.
It allows the design to be blocked and replicated.
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Fractional Factorial Designs - This
program generates two-level fractional-factorial designs
of up to sixteen factors with blocking. Reports show
the aliasing pattern that is used.
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Balanced Incomplete Block Designs -
Designs for up to ten treatments are available.
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Latin Square Designs - This module
generates Latin Square and Graeco-Latin Square designs. Designs for
three to ten treatments are available.
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Response Surface Designs -
Response-surface designs are the only designs provided that allow
for more than two levels. There are two general types of
response-surface designs. The central-composite designs give five
levels to each factor. The Box-Behnken designs give three levels to
each factor.
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Screening Designs - Screening
designs
are used to find the important factors from a large
number (up to 31) of two-level factors. When the number of runs is
4, 8, 16, or 32 (powers of 2), the design is a regular fractional
replication. When the number of runs is 12, 20, 24, or 28, the
design used is a Plackett-Burman
design.
Taguchi Designs -
Taguchi
(OA’s), consist of a set of fractional factorial
designs which ignore interaction and concentrate on main effect
estimation. This procedure generates the most popular set of Taguchi
designs.
D-Optimal Designs -
This procedure generates D-optimal
designs
for multi-factor experiments with both quantitative
and qualitative factors. The factors can have a mixed number of
levels. For example, you could use this procedure to design an
experiment with two quantitative factors having three levels each
and a qualitative factor having seven levels.
Design Generator -
This program generates factorial,
repeated measures, and split-plots designs with up to ten factors.
[Back to PASS]
[Back to
PASS
Procedure List] |
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Use Evaluation
Serial Number "TRYPASS11" |
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PASS 11
Now Available
We are pleased to
announce the availability of PASS 11. This edition
adds over 17 new procedures and features to PASS.
Click here for pricing.
Read about what’s new in
PASS 11.
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"Researchers seeking software to determine sample size have a wide
range of choices... Researchers seeking a comprehensive,
commercial program for analysis of statistical power and precision should
consider PASS 2008."
- Patrick Dattalo
"A Review of Software for Sample Size Determination"
Eval Health Prof, 2009.
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Click here
for the complete list of procedures.
Download a
PASS Update
Most Recent
Version:
PASS 11
Version 11.0.8
Released December 2, 2011
What problems have been fixed by
recent PASS 11 updates?
PASS Training Course
A 4-week, online course on sample size and power, featuring PASS, is now being offered through
statistics.com. The course is
taught by Dr. Thomas P. Ryan.
Click
here for more information.
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Minimum
System Requirements
Click on one of the links below to view the minimum system
requirements for NCSS and PASS products:
PASS 11
PASS 2008
NCSS 2007
Previous Versions |
Accuracy
We at NCSS have put a
great deal of effort into finding the most
accurate algorithms possible. The programs have
been tested and verified over and over, both by
us and by our customers. Each routine has been
verified against textbooks, journal articles,
and, where possible, other software. NCSS and PASS are some
of the most accurate statistical analysis
programs available. NCSS and PASS calculate with
seventeen-digit, double-precision accuracy. |
Guarantee
If you are not completely
satisfied with an NCSS product during the first
30 days for any reason, return the program for a
full, prompt refund (excluding shipping). |
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