Record Display for the EPA National Library Catalog

RECORD NUMBER: 592 OF 1607

OLS Field Name OLS Field Data
Main Title Experimental Design and Data Analysis Applicable to Assays for Monitoring Waterborne Viruses.
Author Wymer, L. J. ;
CORP Author Computer Sciences Corp., Falls Church, VA.;Environmental Monitoring Systems Lab., Cincinnati, OH.
Publisher Jan 89
Year Published 1989
Report Number EPA/600/4-89/002;
Stock Number PB89-148571
Additional Subjects Experimental design ; Viruses ; Statistical analysis ; Bioassay ; Poisson density functions ; Data acquisition ; Environmental tests ; Water chemistry ; Quality assurance ; Plaque assay
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB89-148571 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/08/1989
Collation 79p
Abstract
Techniques are presented for the statistical treatment of data obtained from single titration plaque count viral assays. It is recommended that the standard statistical analysis of any such assay include a test for Poisson distribution of the plaque counts and interval estimates for titer (in total and by virus type), and proportions represented by virus types in the sample. Techniques for improving the quality of the data are discussed, including suggestions to type all viruses from selected bottles rather than randomly selecting plaques for typing, sample size guidelines, and measures to be taken to optimize the precision of the assay.