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...

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 method that is followed is inspired from demographic analysis : it consists of the computation of the total available ressources of the couple over its lifetime, according both to its potential primary ressources and its choice in terms of completed family size. Thèse total available...