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stratified random sample

stratified random sample (partial random sample) In statistics, a modification of the random sample that is particularly useful when obvious heterogeneity exists in the community, area, etc. to be investigated. In such instances a simple random sample may fail to record sufficient replicates of a particular subcategory, or may do so only very inefficiently, so preventing a proper statistical monitoring of variability. In a stratified random scheme sample points are shared among the main types present, then allocated at random within those subcategories.

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"stratified random sample." A Dictionary of Zoology. . Encyclopedia.com. 17 Oct. 2017 <http://www.encyclopedia.com>.

"stratified random sample." A Dictionary of Zoology. . Encyclopedia.com. (October 17, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/stratified-random-sample-1

"stratified random sample." A Dictionary of Zoology. . Retrieved October 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/stratified-random-sample-1

stratified random sample

stratified random sample(partial random sample) In statistics, a modification of the random sample that is particularly useful when obvious heterogeneity exists in the community, area, etc. to be investigated. In such instances a simple random sample may fail to record sufficient replicates of a particular subcategory, or may do so only very inefficiently, so preventing a proper statistical monitoring of variability. In a stratified random scheme sample points are shared among the main types present, then allocated at random within those subcategories.

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"stratified random sample." A Dictionary of Ecology. . Encyclopedia.com. 17 Oct. 2017 <http://www.encyclopedia.com>.

"stratified random sample." A Dictionary of Ecology. . Encyclopedia.com. (October 17, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/stratified-random-sample

"stratified random sample." A Dictionary of Ecology. . Retrieved October 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/stratified-random-sample

stratified random sample

stratified random sample (partial random sample) In statistics, a modification of the random sample that is particularly useful when obvious heterogeneity exists in the community, area, etc. to be investigated. In such instances a simple random sample may fail to record sufficient replicates of a particular subcategory, or may do so only very inefficiently, so preventing a proper statistical monitoring of variability. In a stratified random scheme sample data points are divided into classes (strata) before taking a random sample within each stratum.

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"stratified random sample." A Dictionary of Plant Sciences. . Encyclopedia.com. 17 Oct. 2017 <http://www.encyclopedia.com>.

"stratified random sample." A Dictionary of Plant Sciences. . Encyclopedia.com. (October 17, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/stratified-random-sample-0

"stratified random sample." A Dictionary of Plant Sciences. . Retrieved October 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/stratified-random-sample-0