<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0185-1667</journal-id>
<journal-title><![CDATA[Investigación económica]]></journal-title>
<abbrev-journal-title><![CDATA[Inv. Econ]]></abbrev-journal-title>
<issn>0185-1667</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Economía]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0185-16672002000100037</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Medición del desempeño industrial en México: una perspectiva metodológica]]></article-title>
<article-title xml:lang="en"><![CDATA[Industrial Perfomance Measuremement in Mexico: a methodological perspective]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Brown]]></surname>
<given-names><![CDATA[Flor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Domínguez]]></surname>
<given-names><![CDATA[Lilia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,UNAM Facultad de Economía ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2002</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2002</year>
</pub-date>
<volume>62</volume>
<numero>239</numero>
<fpage>37</fpage>
<lpage>73</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-16672002000100037&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-16672002000100037&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-16672002000100037&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Los objetivos de este trabajo fueron: destacar las diferencias entre las interpretaciones teóricas de las medidas de la tasa y el margen de beneficio más utilizadas en la economía moderna y, en segundo Lugar, examinar el grado en que las disparidades entre las distintas mediciones de las tasas de beneficio se deben a discrepancias en los métodos o a verdaderas diferencias de rentabilidad. Se estimaron cuatro medidas de desempeño para la industria manufacturera mexicana en el periodo 1993 -1997 para 185 clases industriales y se realizaron dos pruebas estadísticas, la Prueba "T' de las medias apareadas, y la Prueba de Concordancia de Kendall. Nuestros resultados revelaron que existen algunas diferencias entre los métodos para el cálculo de los márgenes de beneficio, tanto en los promedios de los niveles como en las tasas de crecimiento así como también en cuanto al ordenamiento entre las distintas clases industriales que se obtiene de los distintos métodos. De ahí que no sea válido comparar resultados de distintas investigaciones cuando en éstas se utilizaron distintos métodos para el cálculo de los márgenes de beneficio. ·]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This paper aims to shed light on the different theoretical interpretations of the profit rate and profit margin used in modern economics and to examine the degree to which disparities in the estimations are due to differences in the method selected for Mexican manufacture in the period between 1993 and 1997 for 185 industrial classes. We estimated four measures of industrial performance. These estimates were tested with paired sample T Test and Kendall Concordance test. Our results revealed that there are important differences between methods of estimation of profit rate in levels, growth rates and orderings. Therefore it is not valid to compare results of different studies when they use different methods of estimation of profit rates.]]></p></abstract>
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