Order pips sampling
Implements order π ps sampling (unequal probabilities, without replacement, fixed sample size).
UPopips(lambda,type=c("pareto","uniform","exponential"))lambda |
vector of working inclusion probabilities or target ones. |
type |
the type of order sampling (pareto, uniform, exponential). |
Returns a vector of selected units of size n, the sample size.
Rosén, B. (1997), Asymptotic theory for order sampling, Journal of Statistical Planning and Inference,
62:135-158.
Rosén, B. (1997), On sampling with probability proportional to size, Journal of Statistical Planning and Inference,
62:159-191.
#define the working inclusion probabilities lambda=c(0.2,0.7,0.8,0.5,0.4,0.4) #draw a Pareto sample s=UPopips(lambda, type="pareto") #the sample is s
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