Simple random sampling is the sampling design in which
n distinct units are selected from the N population units, so that each possible combination of units is same probability of being selected. So call U the population, this sampling design is defined by the pair , where the design stand
, se puede definir como:
tal que
.
Por otra parte la probabilidad de que una unidad cualquiera
y la probabilidad que tienen dos unidades de pertenecer simultáneamente a la muestra viene dada por:
0 comments:
Post a Comment