Proportionate Sampling Formula. In this approach each stratum sample size is directly proportional to the population size of the entire population of strata. Dec 27 2012 For a finite population with population size N the population is divided into H strata subpopulations according to certain attributes.
The Proportionate stratified sampling formula is defined by the formula nh Nh N n where Nh is the population size of the stratum N is the population size n is the sample size and is represented as nh NhNn1 or proportionate stratified sampling Population size of stratumNumber of elements in populationsample size 1. Dec 27 2012 For a finite population with population size N the population is divided into H strata subpopulations according to certain attributes. Proportional allocation sets the sample size in each stratum equal to be proportional to the number of sampling units in that stratum.
It is very important that you pay attention to which value reflects the population proportion p and which value was calculated as the sample proportion p -hat.
N NX X N 1 where X Z α22 p 1-p MOE 2 and Z α2 is the critical value of the Normal distribution at α2 eg. Dec 27 2012 For a finite population with population size N the population is divided into H strata subpopulations according to certain attributes. 144 using the following table. Sampling interval SI Cumulative population B Number clusters D 2000010 2000 Random Start RS 905 Series numbers.
