Business analytics refers to the skills, technologies, practices for continuous iterative exploration and investigation of past business performance to gain insight and drive business planning. Business analytics focuses on developing new insights and understanding of business performance based...

This article describes qregsel, a Stata module to implement a copula-based sample selection correction for quantile regression recently proposed by Arellano and Bonhomme (2017, Econometrica 85(1): 1-28). The command allows the user to model selection in quantile regressions using either a...

Besides some basic methodology and definitions, the guidelines provide practical rules, strategies and hints to lead the practitioner in the initial phase of survey planning and reporting, in the selection of the best sampling method and type of allocation, in the determination of the sample...