Draw Samples Using Lahiri's Method
lahiri.design(relsize, n, clnames = seq(along = relsize))
vector of relative sizes of population PSUs
desired sample size
vector of PSU names for population
clusters vector of n PSUs selected with replacement and with probability proportional to relsize
Lahiri, D. B. (1951). A method of sample selection providing unbiased ratio estimates, Bulletin of the International Statistical Institute, 33: 133 -- 140.