Este traballo trata de demostra-la influencia de tres características do perfil das empresas (tamaño, participación do capital estranxeiro e sector de actividade) no seu rendemento
exportador, medido a través das variables probabilidade de exportar e propensión exportadora. A utilización da análise de varianza, de regresión (lineal e loxística), log-lineal xerárquico e do algoritmo "CHAlD" permite mostra-la influencia daminante do tamaño da empresa na probabilidade de exportar -o sector determina a probabilidad e de exportar só nas empresas de tamaño máis pequeno-. O considera-la propensión exportadora verificase o impacto prevalecente do sector, con electos diferenciados do tamaño segundo o sector industrial examinado. A participación do capital estranxeiro en ningún caso presenta efectos significativosSome characteristics of the firm such as size, rata of foreign capital or industry could
affect export. Linear and logistic regression, variance and log-linear analysis, and CHAlD algorithm have been used to test those relationships. Results have shown that export probability is related to the size of the company. lndustry has only some effects on small and medium-sized enterprises. Export intensity of the firm depends on industry and the relationship between size and export intensity is different in different industries. The influence of foreign trade capital rate cannot be testedS
