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- Q2564360 subject Q7690716.
- Q2564360 abstract "Sample size determination is the act of choosing the number of observations or replicates 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 size used in a study is determined based on the expense of data collection, and the need to have sufficient statistical power. In complicated studies there may be several different sample sizes involved in the study: for example, in a stratified survey there would be different sample sizes for each stratum. In a census, data are collected on the entire population, hence the sample size is equal to the population size. In experimental design, where a study may be divided into different treatment groups, there may be different sample sizes for each group.Sample sizes may be chosen in several different ways:experience - For example, include those items readily available or convenient to collect. A choice of small sample sizes, though sometimes necessary, can result in wide confidence intervals or risks of errors in statistical hypothesis testing.using a target variance for an estimate to be derived from the sample eventually obtainedusing a target for the power of a statistical test to be applied once the sample is collected.".
- Q2564360 wikiPageExternalLink bartlettkotrlikhiggins.pdf.
- Q2564360 wikiPageExternalLink PowerSampleSize.
- Q2564360 wikiPageExternalLink ppc333.htm.
- Q2564360 wikiPageExternalLink pass.
- Q2564360 wikiPageExternalLink power-sample-size-primer.
- Q2564360 wikiPageExternalLink Sample+size+calculator.
- Q2564360 wikiPageExternalLink Calculators.
- Q2564360 wikiPageExternalLink samplesize.html.
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- Q2564360 comment "Sample size determination is the act of choosing the number of observations or replicates 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 size used in a study is determined based on the expense of data collection, and the need to have sufficient statistical power.".
- Q2564360 label "Sample size determination".