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Русско-английский биологический словарь > неслучайная выборка
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Русско-английский экологический словарь > неслучайная выборка
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1. non-random sample2. nonrandom sample[lang name="Russian"]оценка по выборке; выборочное оценивание — sample estimation
[lang name="Russian"]коэффициент отбора; коэффициент выборки — sample coefficient
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5 неслучайная выборка
1) Biology: nonrandom sample2) Mathematics: non-random sampleУниверсальный русско-английский словарь > неслучайная выборка
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non-random sample стат., nonrandom sampleРусско-английский научно-технический словарь Масловского > неслучайная выборка
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7 random sampling
Opsan unbiased sampling technique in which every member of a population has an equal chance of being included in the sample. Based on probability theory, random sampling is the process of selecting and canvassing a representative group of individuals from a particular population in order to identify the attributes or attitudes of the population as a whole. Related sampling techniques include: stratified sampling, in which the population is divided into classes, and random samples are taken from each class; cluster sampling, in which a unit of the sample is a group such as a household; and systematic sampling, which refers to samples chosen by any system other than random selection. -
8 sampling
1. Mktga sales promotion technique in which customers and prospects are offered a free sample of a product2. Opsthe selection of a small proportion of a set of items being studied, from which valid inferences about the whole set or population can be made. Sampling makes it possible to obtain valid research results when it is impracticable to survey the whole population. The size of the sample needed for valid results depends on a number of factors, including the uniformity of the population being studied and the level of accuracy required. The technique is based on the laws of probability, and a number of different sampling methods can be used, including random sampling and nonrandom sampling. Specialized applications of sampling include activity sampling, acceptance sampling, and attribute sampling.
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