Singh-Singh (1979) considered the nonresponses as generated by a mechanism which is equivalent to simple random sampling (srs). They proposed an estimator under the hypothesis associated. It is unbiased and its variance is a function of an unknown parameter. An approximate expression of its variance is presented in this paper. The robustness of the estimator, if the nonresponse mechanism is not fixed by srs, is characterized when the correct approach is related with the need of subsampling the nonresponse stratum.
@article{urn:eudml:doc:43204,
title = {Estimaci\'on bajo no-respuestas aleatorias al usar dise\~nos de probabilidades desiguales.},
journal = {Revista Matem\'atica de la Universidad Complutense de Madrid},
volume = {1},
year = {1988},
pages = {57-63},
zbl = {0655.62004},
mrnumber = {MR0977041},
language = {es},
url = {http://dml.mathdoc.fr/item/urn:eudml:doc:43204}
}
Bouza, C.N. Estimación bajo no-respuestas aleatorias al usar diseños de probabilidades desiguales.. Revista Matemática de la Universidad Complutense de Madrid, Tome 1 (1988) pp. 57-63. http://gdmltest.u-ga.fr/item/urn:eudml:doc:43204/