Statistica (2004). Vol. 3

SOMMARIO:Gini index decomposition for the case of two subgroupsMichele CostaIndex and prevision of satisfaction in exponential models for clinical trialsHayet MerabetThe variance of Gini’s mean difference and its estimatorsMichele Zenga, Marcella Polisicchio, Francesca GreselinThe effects of marketing activities on fast moving consumer good purchases: the case of yoghurt Italian marketSergio Brasini, Marzia Freo, Giorgio TassinariLong-term survivors in an epidemic without recoveryGiuseppe SchinaiaThe weak Pareto law and regular variation in the tailsWalter Krämer, Thorsten ZiebachTreatment of unit non-response in two-stage sampling with partial replacement of unitsFabian C. OkaforEstimation of parameters of a power function distribution and its characterization by k-th record valuesJagdish Saran, Aparna PandeyImproved estimation of population proportion possessing sensitive attribute with unknown repeated trials in randomized response samplingHousila P. Singh, N. MathurDefinition of a