00000nam 2200000zi 4500 9.873936 CaOODSP 20241203113649 m o d f cr ||||||||||| 190530e198901##onc #ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn-sn En13-5/89-174E-PDF El-Shaarawi, A. H., author. The analysis of censored data : an application to toxic contaminant data from the South Saskatchewan River / by A.H. El-Shaarawi, S.R. Esterby and H.O. Block. Application to toxic contaminant data from the South Saskatchewan River Burlington, Ontario : National Water Research Institute, Canada Centre for Inland Waters, January 1989. 1 online resource (18 pages). text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; 89-174 "RRB 89-03." Title from cover. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "In routine water quality monitoring of toxic contaminants, a number of difficulties are usually encountered in the statistical interpretation of the results. A major reason for this is the frequent occurrence of water sample concentrations below the limit of detection. In this report the issue of dealing with values below the detection limit is discussed through a case study using data from the South Saskatchewan River. Some comments are also given outlining the properties and the difficulties associated with the commonly used ad hoc methods for estimating the population characteristics when the data are subject to type I censoring. Specifically inferences about the mean value, trend and seasonal changes are considered"--Abstract. Includes abstract and management perspective in English and French. gccst Water quality gccst Statistical analysis gccst Pollutants Esterby, S. R., author. Block, H. O., author. Canada. Environment Canada. Canada Centre for Inland Waters. National Water Research Institute (Canada) NWRI contribution ; 89-174. (CaOODSP)9.844121 PDF 1.10 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-89-174-eng.pdf