The functions CousineauLaurencelleLambda() returns the correction factor for cluster-randomized sampling. This correction is then used in a variety of ways, for example, to get the effective number of participants (in a power study) or to correct a t-test. See \insertCitecl16superb.
A vector with, in that order, the intra-class correlation r, the number of clusters, then the number of participants in all the clusters.
lambda the correction factor for cluster-randomized sampling.
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