In this article, we present a test for dispersion e ects from the unreplicated 2 n-k regular fractional factorial designs. The proposed procedure for the identiΓΏcation of dispersion e ects uses the log-likelihood ratio based on normal errors. Some practical examples are given to illustrate the appli
Dispersion effects in unreplicated factorial designs
β Scribed by Kerstin Wiklander; Sture Holm
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 173 KB
- Volume
- 19
- Category
- Article
- ISSN
- 1524-1904
- DOI
- 10.1002/asmb.464
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract The paper proposes a new method for the analysis of unreplicated factorial designs. The new method does not use an estimate of the error variance and has the potential to identify up to __m__ β 1 active contrasts, where __m__ is the number of contrasts in the study. It can be shown that
The use of experimental design to identify dispersion effects is an effective tool for improving quality. In this article the problem of identifying such effects from unreplicated experiments is studied. We focus on a method developed for two-level 2 k-p experiments and discuss how the method can be