analysisofvariance attitude(psychology) biometry cienciassociales congresses datacollection datacollection[mesh] datainterpretation distribution(probabilitytheory) geometry healthsurveys healthsurveys[mesh] hn29s943a1976 interviewinginsociology interviewsastopic mathematics methodology methods metodología muestreo(estadística) méthodesstatistiques méthodologie numericaldata population questionnaires regressionanalysis research researchdesign sampling(statistics) samplingstudies[mesh] sciencessociales socialsciences socialsurveys socialsurveyssampling sociology sozialwissenschaften statistical statisticalmethods statistics statisticsastopic surveys surveysandquestionnaires testing umfrage unitedstates w25opp wa950s267s1996 échantillonnage(statistique)