Learn how representative samples and random samples differ and why combining them minimizes sampling bias for accurate data.

These case studies illustrate the immense potential of random sampling techniques in diverse industries and scenarios. From manufacturing to retail, healthcare to environmental conservation, ...

In a recently published news story, we learn about a young doctor, Jake Deutsch, and his personal experience with coronavirus disease 2019. Deutsch tested positive for Covid-19 and checked himself ...

Discover how to determine the ideal percentage of a population for a representative sample to ensure accurate data analysis with minimal sampling error.

The method of systematic random sampling (METHOD=SYS) selects units at a fixed interval throughout the sampling frame or stratum after a random start. PROC SURVEYSELECT chooses the first unit randomly ...

PROC SURVEYSELECT provides a variety of methods for selecting probability-based random samples. With probability sampling, each unit in the survey population has a known, positive probablity of ...

Simulation studies of sampling methods to spread or reduce response burden faced by businesses through participation in CBS surveys. In response to a letter of complaint from the business community, ...