DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click
HERE to register or log in.
Accession Number:
ADA056985
Title:
Design, Analysis, and Interpretation of Screening Studies for Human Factors Engineering Research. Revision.
Corporate Author:
CANYON RESEARCH GROUP INC WESTLAKE VILLAGE CA
Report Date:
1978-06-01
Abstract:
Methods are described for constructing Resolution IV screening designs that are robust to linear, quadratic, and cubic trend effects and will also keep the number of factor-level changes for some variables at a minimum. Complete designs, capable of screening up to 32 variables, are provided along with appropriate methods of analysis. Numerous criteria for selecting non- trivial variables are discussed, including mean difference, eta squared, cumulative probability, and half-normal plots. How to handle subjects in an experiment is described when their characteristics can be included as experimental factors and when they cannot be, and when subjects are merely a form of replication. Lack-of-fit tests are provided to help decide whether a second- or a third-order response surface is needed. Numerous methods of analyzing screening studies with multiple responses are described. A method is given for developing a prediction equation with data collected from an incomplete screening design.
Descriptive Note:
Technical rept. Sep 1976-Sep 1977
Supplementary Note:
Supersedes report dated Sep 1977, ADA050361. DOI: 10.21236/ADA056985
Pages:
0239
Distribution Statement:
Approved for public release; distribution is unlimited.
Contract Number:
F44620-76-C-0008
File Size:
13.30MB
