The Problem of Optimum Stratification
- 1 January 1950
- journal article
- research article
- Published by Taylor & Francis in Scandinavian Actuarial Journal
- Vol. 1950 (3-4) , 203-213
- https://doi.org/10.1080/03461238.1950.10432042
Abstract
Although most applications of stratified sampling represent sampling from a finite population, π(N), consisting of k mutually exclusive sub-populations or strata, n, (N,), it is for purposes of theoretical investigations convenient to deal with a hypothetical population n, represented by a distribution function f(y), a < y < b. This hypothetical population likewise consists of k mutually exclusive strata, πi , i = 1,.2 ... k. The mean of this population is µi being the mean of ni. By means of a random sample of n observations, ni of which are selected from πi , µ, is estimated by: being the estimate of µi .Keywords
This publication has 1 reference indexed in Scilit:
- On the Two Different Aspects of the Representative Method: The Method of Stratified Sampling and the Method of Purposive SelectionJournal of the Royal Statistical Society, 1934