Simple random sampling without replacement
Draws a simple random sampling without replacement of size n (equal probabilities, fixed sample size, without replacement).
srswor(n,N)
n |
sample size. |
N |
population size. |
Returns a vector (with elements 0 and 1) of size N, the population size. Each element k of this vector indicates the status of unit k (1, unit k is selected in the sample; 0, otherwise).
############ ## Example 1 ############ #select a sample s=srswor(3,10) #the sample is (1:10)[s==1] ############ ## Example 2 ############ data(belgianmunicipalities) Tot=belgianmunicipalities$Tot04 name=belgianmunicipalities$Commune n=200 #select a sample s=srswor(n,length(Tot)) #the sample is as.vector(name[s==1])
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