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method+of+representative+sample

См. также в других словарях:

  • sample preparation — ▪ chemistry Introduction  in analytical chemistry (chemistry), the processes in which a representative piece of material is extracted from a larger amount and readied for analysis. Sampling and sample preparation have a unique meaning and special …   Universalium

  • Chou-Fasman method — The Chou Fasman method are an empirical technique for the prediction of secondary structures in proteins, originally developed in the 1970s. Chou PY, Fasman GD. (1974). Prediction of protein conformation. Biochemistry. 13(2):222 45.] Chou PY,… …   Wikipedia

  • Chou–Fasman method — The Chou–Fasman method are an empirical technique for the prediction of secondary structures in proteins, originally developed in the 1970s.[1][2][3] The method is based on analyses of the relative frequencies of each amino acid in alpha helices …   Wikipedia

  • Random sample — A sample is a subject chosen from a population for investigation. A random sample is one chosen by a method involving an unpredictable component. Random sampling can also refer to taking a number of independent observations from the same… …   Wikipedia

  • Scientific method — …   Wikipedia

  • public opinion — the collective opinion of many people on some issue, problem, etc., esp. as a guide to action, decision, or the like. [1560 70] * * * Introduction       an aggregate of the individual views, attitudes, and beliefs about a particular topic,… …   Universalium

  • Lancet surveys of Iraq War casualties — The Lancet , one of the oldest scientific medical journals in the world, published two peer reviewed studies on the effect of the 2003 invasion of Iraq and subsequent occupation on Iraqi mortality. The first was published in 2004; the second (by… …   Wikipedia

  • dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or …   Universalium

  • crime — crimeless, adj. crimelessness, n. /kruym/, n. 1. an action or an instance of negligence that is deemed injurious to the public welfare or morals or to the interests of the state and that is legally prohibited. 2. criminal activity and those… …   Universalium

  • Drilling rig — For a detailed diagram of a Petroleum drilling rig, see List of components of oil drilling rigs. Drilling rig preparing rock blasting …   Wikipedia

  • Sampling bias — In statistics, sampling bias is when a sample is collected in such a way that some members of the intended population are less likely to be included than others. It results in a biased sample, a non random sample[1] of a population (or non human… …   Wikipedia

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