[eng] Nuptiality and fertility by social and cultural class by Gérard Calot and Jean-Claude Deville . The family survey taken in 1962 permits study of the social, cultural and geographical differentials in age at first marriage, level of pre-marital conceptions and fertility. . Between...

[fre] L'enquête Emploi est considérée comme une référence solide sur la population active, le chômage, les taux d'activité. Ce n'est cependant qu'un sondage : l'enquête ne fournit aucune mesure exacte, mais, simplement, des estimations. Peut-on leur faire confiance? Comment se fait-il...

Surveys of consumption often rest on household records of expenditures over a given period. With the aid of a model relating to dates and amounts of purchases, one can drive conditions for the repartition in time of the observations thats yield unbiased estimates of annual spending. An exact...

[eng] The rhythm of families composition, in other words the time required between marriage and birth of first child, or between the following births, is a component of natality whose importance has scarcely been studied up-to-now. Therefore, from period to period, from social category to social...

A balanced sampling design is defined by the property that the Horvitz--Thompson estimators of the population totals of a set of auxiliary variables equal the known totals of these variables. Therefore the variances of estimators of totals of all the variables of interest are reduced, depending...

[fre] La fécondité et l'activité féminine sont très liées : celle-ci, notamment, diminue avec les charges de famille. Or, entre 1968 et 1975, les taux d'activité des mères de moins de trois enfants ou d'enfants d'âge scolaire ont considérablement augmenté. La fécondité des actives...