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  2. Stratified randomization - Wikipedia

    en.wikipedia.org/wiki/Stratified_randomization

    Graphic breakdown of stratified random sampling. In statistics, stratified randomization is a method of sampling which first stratifies the whole study population into subgroups with same attributes or characteristics, known as strata, then followed by simple random sampling from the stratified groups, where each element within the same subgroup are selected unbiasedly during any stage of the ...

  3. Stratified sampling - Wikipedia

    en.wikipedia.org/wiki/Stratified_sampling

    Stratification is the process of dividing members of the population into homogeneous subgroups before sampling. The strata should define a partition of the population. That is, it should be collectively exhaustive and mutually exclusive: every element in the population must be assigned to one and only one stratum.

  4. Davis–Moore hypothesis - Wikipedia

    en.wikipedia.org/wiki/Davis–Moore_hypothesis

    The hypothesis is an attempted explanation of social stratification, based on the idea of "functional necessity".Davis and Moore argue that the most difficult jobs in any society are the most necessary and require the highest rewards and compensation to sufficiently motivate individuals to fill them.

  5. Social stratification - Wikipedia

    en.wikipedia.org/wiki/Social_stratification

    Social stratification refers to a society's categorization of its people into groups based on socioeconomic factors like wealth, income, race, education, ...

  6. Stratification (clinical trials) - Wikipedia

    en.wikipedia.org/wiki/Stratification_(clinical...

    Stratification is sometimes called blocking, and may be used in randomized block design. [ 1 ] Stratified purposive sampling is a type of typical case sampling, and is used to get a sample of cases that are "average", "above average", and "below average" on a particular variable; this approach generates three strata, or levels, each of which is ...

  7. Ascriptive inequality - Wikipedia

    en.wikipedia.org/wiki/Ascriptive_inequality

    Davis believed that ascriptive inequality led to stratification; however, he also believed that stratification was a functioning mechanism to motivate people to do better. He thought that there were certain individuals who were designed for a task, but that others could use competition as motivation to move up the social hierarchy based on ...

  8. NYT ‘Connections’ Hints and Answers Today, Tuesday, February 4

    www.aol.com/nyt-connections-hints-answers-today...

    If you've been having trouble with any of the connections or words in Tuesday's puzzle, you're not alone and these hints should definitely help you out. Plus, I'll reveal the answers further down. ...

  9. Status group - Wikipedia

    en.wikipedia.org/wiki/Status_group

    The German sociologist Max Weber formulated a three-component theory of stratification that defines a status group [1] (also status class and status estate) [2] as a group of people within a society who can be differentiated by non-economic qualities such as honour, prestige, ethnicity, race, and religion. [3]