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ფენა
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Layer, английский
Stratum, английский
- In random sampling, sometimes the sample is drawn separately from different disjoint subsets of the population. each such subset is called a stratum. (the plural of stratum is strata.) samples drawn in such a way are called stratified samples. estimators
- In random sampling, sometimes the sample is drawn separately from different disjoint subsets of the population. each such subset is called a stratum. (the plural of stratum is strata.) samples drawn in such a way are called stratified samples. estimators based on stratified random samples can have smaller sampling errors than estimators computed from simple random samples of the same size, if the average variability of the variable of interest within strata is smaller than it is across the entire population; that is, if stratum membership is associated with the variable.
- A bed of sedimentary rock or earth.
- A layer of tissue forming the epidermis (note: the plural is strata.) comment: the main layers of the epidermis are: the stratum germinativum or stratum basale: this layer produces the cells that are pushed up to form the other layers; the stratum granulosum, a layer with granular cells under the stratum lucidum, a thin clear layer of dead and dying cells, and the surface layer, or stratum corneum, a layer of dead keratinised cells which progressively fall off.
- Страта; слой; пласт
- Пласт (породы), слой (грунта)
- A layer that is separable along bedding planes from layers above and
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Laziness, английский
Layer, английский
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