Búsqueda

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

<?xml version="1.0" encoding="UTF-8"?><modsCollection xmlns="http://www.loc.gov/mods/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-8.xsd">
<mods version="3.8">
<titleInfo>
<nonSort xml:space="preserve">The  </nonSort>
<title>Distribution of student's t-statistic for small samples from lognormal exposure distributions</title>
</titleInfo>
<titleInfo type="alternative">
<title>American Industrial Hygiene Association journal</title>
</titleInfo>
<name type="personal" usage="primary" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080097868">
<namePart>Evans, John S.</namePart>
<nameIdentifier>MAPA20080097868</nameIdentifier>
</name>
<name type="personal" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080165574">
<namePart>Hawkins, Neil C.</namePart>
<nameIdentifier>MAPA20080165574</nameIdentifier>
</name>
<typeOfResource>text</typeOfResource>
<originInfo>
<place>
<placeTerm type="code" authority="marccountry">usa</placeTerm>
</place>
<dateIssued encoding="marc">1988</dateIssued>
<issuance>serial</issuance>
</originInfo>
<language>
<languageTerm type="code" authority="iso639-2b">eng</languageTerm>
</language>
<physicalDescription>
<form authority="marcform">print</form>
<form authority="marccategory">microform</form>
</physicalDescription>
<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>
<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080585679">
<topic>Higiene industrial</topic>
</subject>
<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080605278">
<topic>Contaminantes químicos</topic>
</subject>
<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080570484">
<topic>Riesgo laboral</topic>
</subject>
<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080539948">
<topic>Tests</topic>
</subject>
<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080551797">
<topic>Muestreos</topic>
</subject>
<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080601508">
<topic>Estudios estadísticos</topic>
</subject>
<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080592042">
<topic>Modelos matemáticos</topic>
</subject>
<classification authority="">872</classification>
<relatedItem type="host">
<titleInfo>
<title>American Industrial Hygiene Association journal</title>
</titleInfo>
<originInfo>
<publisher>Akron, Ohio</publisher>
</originInfo>
<part>
<text>Vol. 49, nº 10, October 1988 ; p. 512-515</text>
</part>
</relatedItem>
<recordInfo>
<recordContentSource authority="marcorg">MAP</recordContentSource>
<recordCreationDate encoding="marc">940622</recordCreationDate>
<recordChangeDate encoding="iso8601">20080418120041.0</recordChangeDate>
<recordIdentifier source="MAP">MAP20071020006</recordIdentifier>
<languageOfCataloging>
<languageTerm type="code" authority="iso639-2b">spa</languageTerm>
</languageOfCataloging>
</recordInfo>
</mods>
</modsCollection>