inclusionprobabilities {sampling} | R Documentation |
Inclusion probabilities
Description
Computes the first-order inclusion probabilities from a vector of positive numbers (for a probability proportional-to-size sampling design). Their sum is equal to n, the sample size.
Usage
inclusionprobabilities(a,n)
Arguments
a |
vector of positive numbers. |
n |
sample size. |
See Also
Examples
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## Example 1
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# a vector of positive numbers
a=1:20
# inclusion probabilities for a sample size n=12
inclusionprobabilities(a,12)
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## Example 2
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# Computation of the inclusion probabilities proportional to the number
# of inhabitants in each municipality of the Belgian municipalities data.
data(belgianmunicipalities)
pik=inclusionprobabilities(belgianmunicipalities$Tot04,200)
# the first-order inclusion probabilities for each municipality
data.frame(pik=pik,name=belgianmunicipalities$Commune)
# the sum is equal to the sample size
sum(pik)
[Package sampling version 2.10 Index]