The Distribution of student's t-statistic for small samples from lognormal exposure distributions

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<title>Distribution of student's t-statistic for small samples from lognormal exposure distributions</title>
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<title>American Industrial Hygiene Association journal</title>
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<namePart>Evans, John S.</namePart>
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<namePart>Hawkins, Neil C.</namePart>
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<dateIssued encoding="marc">1988</dateIssued>
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<abstract displayLabel="Summary">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</abstract>
<note type="statement of responsibility">John S. Evans and Neil C. Hawkins</note>
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<text>Vol. 49, nº 10, October 1988 ; p. 512-515</text>
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