In some applications it is cost efficient to sample data in two or more stages. In the first stage a simple random sample is drawn and then stratified according to some easily measured attribute. In ...

This article reviews literature on confidence intervals for p, assuming (Bernoulli) single, double, and multistage sampling. Methods used to produce approximate single-sampling confidence intervals ...

Survey sampling is the process of selecting a probability-based sample from a finite population according to a sample design. You then collect data from these selected units and use them to estimate ...

Agilent Technologies Inc. has announced the release of “Sample Preparation Fundamentals for Chromatography,” written by sample preparation expert Ronald E. Majors, Ph.D. The publication is a ...

Agilent Technologies Inc. has announced the release of “Sample Preparation Fundamentals for Chromatography,” written by sample preparation expert Ronald E. Majors, Ph.D. The publication is a ...