We consider the problem of comparing sojourn time distributions of a transient state in a general multistate system in two samples (groups) when the transition times are right censored. Using the reweighting principle, a two-sample Mann– Whitney type of U -statistic is constructed that compares only the uncensored sojourn times from the two distributions. A second Mann–Whitney type of statistic...

Previously reported dendrochemical data showed temporal variability in concentration of tungsten (W) and cobalt (Co) in tree rings of Fallon, Nevada, US. Criticism of this work questioned the use of the Mann-Whitney test for determining change in element concentrations. Here, we demonstrate that Mann-Whitney is appropriate for comparing background element concentrations to possibly elevated con...

structural steel sections are mainly used in beams and columns of building frames. iran national steel industrialgroup is among the oldest and largest producers of beams in iran. it has two beam production lines, namely line630 and line 650. in this study, the mechanical properties of manufactured beams in these production lines werecompared. based on the t-test results, the elongation is signi...

BACKGROUND It has generally been argued that parametric statistics should not be applied to data with non-normal distributions. Empirical research has demonstrated that Mann-Whitney generally has greater power than the t-test unless data are sampled from the normal. In the case of randomized trials, we are typically interested in how an endpoint, such as blood pressure or pain, changes followin...

El sector artesanal es un importante eje de desarrollo económico, fuente ingreso para las familias artesanos y una manifestación cultural los pueblos. objetivo identificar aspectos que caracterizan la gestión administrativa financiera del colombiano ecuatoriano, evidenciando similitudes diferencias a fin establecer permitan definir ruta común su desarrollo, con ello gerencia directivos puedan m...