non-probability sampling

The distinction between probability and non-probability sampling is fundamental to discussions of sampling . In the former case, each unit of a known population has a specifiable probability of being included in a sample, drawn according to simple random, stratified random, multi-stage cluster, or some other form of representative sampling technique that permits the use of inferential statistics . Non-probability samples, on the other hand, are generated by a variety of ad hoc techniques (such as snowballing ), usually in those circumstances where no suitable sampling frame exists, or the research design does not actually require probability sampling. Studies of business élites offer an example of the former, since no convenient and exhaustive lists are generally available of (let us say) company directors holding multiple directorships in large business enterprises, whereas studies of (for example) members of a religious sect rarely require probability sampling: a selection of the membership (not necessarily statistically representative) is usually considered to be sufficient for most sociological purposes.

Dictionary of sociology. 2013.

Look at other dictionaries:

  • non probability sampling — UK US noun [U] ► MARKETING methods of finding out information that involve choosing people to answer questions in a way that means the results will probably not be true of people in general: »Non probability sampling is cheap and easy. → Compare… …   Financial and business terms

  • non-probability sampling — A sampling procedure in which the sample is chosen on the basis of convenience, personal judgement (see judgemental sampling), quota controls (see quota sampling), or some other principle, rather than on the basis of random selection from a… …   Big dictionary of business and management

  • probability sampling — UK US noun [U] MARKETING ► the process of getting information by asking questions of a group of people who are chosen by chance, so that the answers will be typical of those of the general population: »Based on a probability sampling, the… …   Financial and business terms

  • probability sampling — random sampling A sampling procedure in which each element of a population has a known chance of being selected for the sample Apart from simple random sampling, this includes certain forms of stratified sampling and systematic sampling The… …   Big dictionary of business and management

  • sampling, non-probability — See non probability sampling …   Dictionary of sociology

  • Sampling (statistics) — Sampling is that part of statistical practice concerned with the selection of individual observations intended to yield some knowledge about a population of concern, especially for the purposes of statistical inference. Each observation measures… …   Wikipedia

  • sampling — samp‧ling [ˈsɑːmplɪŋ ǁ ˈsæm ] noun [countable, uncountable] STATISTICS the activity of checking a small number of products from a larger number, asking questions to people from a larger number etc, so as to understand better the group as a whole …   Financial and business terms

  • sampling — A method for collecting information and drawing inferences about a larger population or universe, from the analysis of only part thereof, the sample. Censuses of the population are an expensive way of monitoring social and economic change, and… …   Dictionary of sociology

  • Probability distribution — This article is about probability distribution. For generalized functions in mathematical analysis, see Distribution (mathematics). For other uses, see Distribution (disambiguation). In probability theory, a probability mass, probability density …   Wikipedia

  • Sampling bias — In statistics, sampling bias is when a sample is collected in such a way that some members of the intended population are less likely to be included than others. It results in a biased sample, a non random sample[1] of a population (or non human… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.