proportionate stratified sampling
Big dictionary of business and management. 2014.
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Stratified sampling — In statistics, stratified sampling is a method of sampling from a population.When sub populations vary considerably, it is advantageous to sample each subpopulation (stratum) independently. Stratification is the process of grouping members of the … Wikipedia
disproportionate stratified sampling — A sampling method in which the size of the sample drawn from a particular stratum is not proportional to the relative size of that stratum. For example, a stratum could be large supermarkets, which may only account for 20% of all grocery stores… … Big dictionary of business and management
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
Cluster sampling — is a sampling technique used when natural groupings are evident in a statistical population. It is often used in marketing research. In this technique, the total population is divided into these groups (or clusters) and a sample of the groups is… … Wikipedia
Ontario general election, 2007 — 2003 ← members October 10, 2007 → 2011 … Wikipedia