Centro de Documentacion de Fundación MAPFRE - The Distribution of student's t-statistic for small samples from lognormal exposure distributions

Notes: Sumario: In industrial environments it is common for pollutant concentrations to be approximately lognormal. Unfortunately, when based on small samples from lognormal distributions, the ordinary student's t-statistic has some undesirable characteristics which are not recognized widely by practicing industrial hygienists. In this paper, the authors demonstrate the difficulties in using the ordinary student's t-statistic to evaluate the average exposure, explore the properties of alternative test statistics, and make some general observations on the implications of these findingsRelated records: En: American Industrial Hygiene Association journal. - Akron, Ohio. - Vol. 49, nº 10, October 1988 ; p. 512-515Materia / lugar / evento: Higiene industrial Contaminantes químicos Riesgo laboral Tests Muestreos Estudios estadísticos Modelos matemáticos Otros autores: Hawkins, Neil C.
Secondary titles: Título: American Industrial Hygiene Association journal
Other categories: 872