The derivations are based on a direct use of the statistical properties of the sampling errors in the second stage. For the ease of exposition we examine the specific case that simple random sampling ...

Learn how simple random sampling works and what advantages it offers over other methods when selecting a research group from a larger population.

The quality control of meteorological data has lately received great attention for its important significance to national ecological security and military security. However, the observational quality ...

When observations are costly or time-consuming but the ranking of the observations without actual measurement can be done relatively easily, rankedset sampling (RSS) can be employed instead of simple ...