stratified random sampling

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• Stratified Random Sampling — A method of sampling that involves the division of a population into smaller groups known as strata. In stratified random sampling, the strata are formed based on members shared attributes or characteristics. A random sample from each stratum is… …   Investment dictionary

• random sampling — The selection of a *sample of data from a *population on the basis that each item in the population has an even chance of being selected. In random sampling, there is no judgmental element to skew the sample. See also *stratified sampling and… …   Auditor's dictionary

• 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

• 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

• 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

• Random sample — A sample is a subject chosen from a population for investigation. A random sample is one chosen by a method involving an unpredictable component. Random sampling can also refer to taking a number of independent observations from the same… …   Wikipedia

• sampling — noun 1. (statistics) the selection of a suitable sample for study (Freq. 4) • Topics: ↑statistics • Hypernyms: ↑choice, ↑selection, ↑option, ↑pick …   Useful english dictionary

• sampling — /sam pling, sahm /, n. 1. the act or process of selecting a sample for testing, analyzing, etc. 2. the sample so selected. [1630 40; SAMPLE + ING1] * * * ▪ statistics       in statistics, a process or method of drawing a representative group of… …   Universalium

• Stratified sampling — The selection of a *sample of data from a *population that has been arranged into groups according to a defined trait or attribute. See also judgmental sampling, *random sampling, and *statistical sampling …   Auditor's dictionary

• Simple Random Sample — A subset of a statistical population in which each member of the subset has an equal probability of being chosen. A simple random sample is meant to be an unbiased representation of a group. An example of a simple random sample would be a group… …   Investment dictionary