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stratum sample

См. также в других словарях:

  • Sample size determination — is the act of choosing the number of observations to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. In practice, the sample …   Wikipedia

  • Sample size — The sample size of a statistical sample is the number of observations that constitute it. It is typically denoted n , a positive integer (natural number).Typically, all else being equal, a larger sample size leads to increased precision in… …   Wikipedia

  • proportional sample — noun the population is divided into strata and a random sample is taken from each stratum • Syn: ↑stratified sample, ↑representative sample • Topics: ↑statistics • Hypernyms: ↑sample distribution, ↑sample, ↑ …   Useful english dictionary

  • representative sample — noun the population is divided into strata and a random sample is taken from each stratum • Syn: ↑stratified sample, ↑proportional sample • Topics: ↑statistics • Hypernyms: ↑sample distribution, ↑sample, ↑ …   Useful english dictionary

  • stratified sample — noun the population is divided into strata and a random sample is taken from each stratum • Syn: ↑representative sample, ↑proportional sample • Topics: ↑statistics • Hypernyms: ↑sample distribution, ↑sample, ↑ …   Useful english dictionary

  • stratified random sample — Statistics. a random sample of a population in which the population is first divided into distinct subpopulations, or strata, and random samples are then taken separately from each stratum. * * * …   Universalium

  • stratified random sample — a stratified sample in which random samples are chosen within each stratum. Sometimes called stratified s …   Medical dictionary

  • stratified random sample — Statistics. a random sample of a population in which the population is first divided into distinct subpopulations, or strata, and random samples are then taken separately from each stratum …   Useful english 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

  • Balanced repeated replication — is a statistical technique for estimating the sampling variability of a statistic obtained by stratified sampling. Outline of the technique # Select balanced half samples from the full sample. # Calculate the statistic of interest for each half… …   Wikipedia

  • 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

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