Simon Fraser University

PPS Systematic Sampling

If you specify the option METHOD=PPS_SYS, PROC SURVEYSELECT selects units by systematic random sampling with probability proportional to size. Systematic sampling selects units at a fixed interval ...
JSTOR Daily

The Centric Systematic Area-Sample Treated as a Random Sample

This is a preview. Log in through your library . Journal Information Biometrics is a scientific journal emphasizing the role of statistics and mathematics in the biological sciences. Its object is to ...
Simon Fraser University

PROC SURVEYSELECT Statement

The PROC SURVEYSELECT statement invokes the procedure and optionally identifies input and output data sets. If you do not name a DATA= input data set, the procedure selects the sample from the most ...
CMAJ

A guide for the design and conduct of self-administered surveys of clinicians

Survey research is an important form of scientific inquiry1 that merits rigorous design and analysis.2 The aim of a survey is to gather reliable and unbiased data from a representative sample of ...
BBC

Experimental methods using quadrats and transects

When sampling a population, the numbers of organisms are counted within a sample site, and then the results multiplied to estimate the total number in the entire habitat. Large animals and plants can ...