Abstract
The problem of determining the asymptotically optimal group limits of a sample, for maximum likelihood estimation of the parameters in a 2-parameter Weibull distribution, is studied in this paper. The asymptotically optimal group limits (optimal interval length) in unequi-class iequi-class) grouped sample are (is) computed with various number of groups. The asymptotic relative efficiencies of the maximum likelihood estimates of the parameters are also computed for the optimally grouped sample.