Joint inclusion probabilities for systematic sampling
Computes the joint (second-order) inclusion probabilities for systematic sampling.
vector of the first-order inclusion probabilities.
Returns a NxN matrix of the following form: the main diagonal contains the first-order inclusion probabilities for each unit k in the population; elements (k,l) are the joint inclusion probabilities of units k and l, with k not equal to l. N is the population size.
Madow, W.G. (1949), On the theory of systematic sampling, II, Annals of Mathematical Statistics, 20, 333-354.
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