Inferences about the variability of means from censored data / by A.H. El-Shaarawi, P.B. Kauss, M.K. Kirby, and M. Walsh. : En13-5/89-119E-PDF

"In recent years, intensive biological monitoring studies have been carried out on the Niagara River by the Ontario Ministry of the Environment. The basic objective was to determine the relative bioavailability of trace contaminants at various locations in the river, and to identify sources. A recurring difficulty encountered with the generated data is that substantial portions of sample concentrations of many toxic pollutants are below the limits of detection established by analytical laboratories. Under the assumption that the distribution of the data is log normal, the likelihood ratio test for testing the equality of several means for type I censored data is derived and its use for evaluating the spatial variability of trace contaminants in the river is illustrated"--Abstract.

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Renseignements sur la publication
Ministère/Organisme Canada. Environment Canada.
National Water Research Institute (Canada). Rivers Research Branch.
Canada Centre for Inland Waters.
Ontario. Ministry of the Environment.
Ontario. Water Resources Branch.
Titre Inferences about the variability of means from censored data / by A.H. El-Shaarawi, P.B. Kauss, M.K. Kirby, and M. Walsh.
Titre de la série NWRI contribution ; 89-119
Type de publication Série - Voir l'enregistrement principal
Langue [Anglais]
Format Électronique
Document électronique
Note(s) "RRB-88-94."
Title from cover.
Digitized edition from print [produced by Environment and Climate Change Canada].
Includes bibliographical references.
Includes abstract and management perspective in English and French.
Information sur la publication Burlington, Ontario : National Water Research Institute, Rivers Research Branch, Canada Centre for Inland Waters ; Toronto, Ontario : Ontario Ministry of the Environment, Water Resources Branch, December 1988.
Auteur / Contributeur El-Shaarawi, A. H., author.
Kauss, P. B‏., author.
Kirby, M. K‏., author.
Walsh, M., author.
Description 1 online resource (12 pages, 6 unnumbered pages) : map.
Numéro de catalogue
  • En13-5/89-119E-PDF
Descripteurs Rivers
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