Chapman-Robbins bound

English Etymology Named after Douglas Chapman and Herbert Robbins, who discovered it in 1951, independently of the original (1950) discovery by John Hammersley. Noun en statistics A lower bound on the variance of estimators of a deterministic parameter; a generalization of the Cramér-Rao bound, it is both tighter and more widely applicable, but usually harder to compute. en Hammersley-Chapman-Robbins bound en eponyms