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  2. Quota sampling - Wikipedia

    en.wikipedia.org/wiki/Quota_sampling

    Quota sampling is the non-probability version of stratified sampling. In stratified sampling, subsets of the population are created so that each subset has a common characteristic, such as gender. Random sampling chooses a number of subjects from each subset with, unlike a quota sample, each potential subject having a known probability of being ...

  3. Production quota - Wikipedia

    en.wikipedia.org/wiki/Production_quota

    Production quota. A production quota is a goal for the production of a good. It is typically set by a government or an organization, and can be applied to an individual worker, firm, industry or country. Quotas can be set high to encourage production, or can be used to restrict production to support a certain price level.

  4. Outlier - Wikipedia

    en.wikipedia.org/wiki/Outlier

    In statistics, an outlier is a data point that differs significantly from other observations. [1][2] An outlier may be due to a variability in the measurement, an indication of novel data, or it may be the result of experimental error; the latter are sometimes excluded from the data set. [3][4] An outlier can be an indication of exciting ...

  5. Tariff-rate quota - Wikipedia

    en.wikipedia.org/wiki/Tariff-rate_quota

    Tariff-rate quota. In economics, a tariff-rate quota (TRQ) (also called a tariff quota) is a two-tiered tariff system that combines import quotas and tariffs to regulate import products. A TRQ allows a lower tariff rate on imports of a given product within a specified quantity and requires a higher tariff rate on imports exceeding that quantity ...

  6. Mathematics of apportionment - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_apportionment

    For example, the Quota method of Balinsky and Young satisfies house-monotonicity and upper-quota by construction, and it can be proved that it also satisfies lower-quota. [11] It can be generalized: there is a general algorithm that yields all apportionment methods which are both house-monotone and satisfy both quotas.

  7. Survey sampling - Wikipedia

    en.wikipedia.org/wiki/Survey_sampling

    Quota Samples: The sample is designed to include a designated number of people with certain specified characteristics. For example, 100 coffee drinkers. This type of sampling is common in non-probability market research surveys. Convenience Samples: The sample is composed of whatever persons can be most easily accessed to fill out the survey.

  8. Import quota - Wikipedia

    en.wikipedia.org/wiki/Import_quota

    Import quota. An import quota is a type of trade restriction that sets a physical limit on the quantity of a good that can be imported into a country in a given period of time. [1] Quotas, like other trade restrictions, are typically used to benefit the producers of a good in that economy (protectionism).

  9. Sampling (statistics) - Wikipedia

    en.wikipedia.org/wiki/Sampling_(statistics)

    Sampling (statistics) In statistics, quality assurance, and survey methodology, sampling is the selection of a subset or a statistical sample (termed sample for short) of individuals from within a statistical population to estimate characteristics of the whole population. The subset is meant to reflect the whole population and statisticians ...