This paper deals with construction of confidence intervals for process capability index using bootstrap method (proposed by Chen and Pearn in Qual Reliab Eng Int 13(6):355–360, 1997) by applying simulation technique. It is assumed that the quality characteristic follows type-II generalized log-logistic distribution introduced by Rosaiah et al. in Int J Agric Stat Sci 4(2):283–292, (2008). Discu...

The problem of missing data is a common feature in any study, and single imputation method often applied to deal with this problem. first contribution paper analyse the empirical performance some traditional methods when they are estimation Gini index, popular measure inequality used many studies. Various for constructing confidence intervals index also empirically evaluated. We consider severa...