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The Distribution of student's t-statistic for small samples from lognormal exposure distributions
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MAP20071020006
Evans, John S. ‌
The Distribution of student's t-statistic for small samples from lognormal exposure distributions / John S. Evans and Neil C. Hawkins
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 findings
En: American Industrial Hygiene Association journal. - Akron, Ohio. - Vol. 49, nº 10, October 1988 ; p. 512-515
1. Higiene industrial ‌. 2. Contaminantes químicos ‌. 3. Riesgo laboral ‌. 4. Tests ‌. 5. Muestreos ‌. 6. Estudios estadísticos ‌. 7. Modelos matemáticos ‌. I. Hawkins, Neil C. ‌. II. Title. III. Título: American Industrial Hygiene Association journal.