Continuous distribution of variables under study and auxiliary variables are considered. The purpose of the paper is to estimate the mean of the variable under study using a sampling design which is dependent on the observation of a continuous auxiliary variable in the whole population....

Statisticians rarely devote as much attention to their profession as it does deserve, including such fundamental questions as what actually constitutes statistics today - as a discipline in relation to others, primarily to mathematics and observation-based sciences (theoretically or applied...