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 ...

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

This paper describes certain quota sampling procedures and attempts to show that they are very close to traditional probability sampling. Quotas are shown to depend on availability for interviewing ...

Bart Buelens, Joep Burger, Jan A. van den Brakel, Comparing Inference Methods for Non-probability Samples, International Statistical Review / Revue Internationale de Statistique, Vol. 86, No. 2 ...

This paper presents and discusses some new results on the second-order inclusion probabilities of a systematic probability proportional to size sample drawn from a randomly ordered list, also called ...

This dissertation proposes a novel framework for correcting selection bias in nonprobability samples. The general idea is to construct a set of unit weights for the nonprobability sample by borrowing ...

Serious polling requires careful data collection and careful adjustment. It doesn't mean much to say your poll is a "probability sample" when your nonresponse rate is 90 percent.

Objective probability is the probability that an event will occur based on an analysis in which each measurement is based on a recorded observation.

This study reports the findings of a comparison between different non-probability sampling methods applied in a WWW-user-survey.