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test statistical hypothesis

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  • Statistical hypothesis testing — This article is about frequentist hypothesis testing which is taught in introductory statistics. For Bayesian hypothesis testing, see Bayesian inference. A statistical hypothesis test is a method of making decisions using data, whether from a… …   Wikipedia

  • Statistical inference — In statistics, statistical inference is the process of drawing conclusions from data that are subject to random variation, for example, observational errors or sampling variation.[1] More substantially, the terms statistical inference,… …   Wikipedia

  • Statistical significance — In statistics, a result is called statistically significant if it is unlikely to have occurred by chance. A statistically significant difference simply means there is statistical evidence that there is a difference; it does not mean the… …   Wikipedia

  • Statistical power — The power of a statistical test is the probability that the test will reject a false null hypothesis (that it will not make a Type II error). As power increases, the chances of a Type II error decrease. The probability of a Type II error is… …   Wikipedia

  • Statistical randomness — A numeric sequence is said to be statistically random when it contains no recognizable patterns or regularities; sequences such as the results of an ideal die roll, or the digits of π exhibit statistical randomness.Statistical randomness does not …   Wikipedia

  • test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …   Medical dictionary

  • Hypothesis Testing — A process by which an analyst tests a statistical hypothesis. The methodology employed by the analyst depends on the nature of the data used, and the goals of the analysis. The goal is to either accept or reject the null hypothesis. Hypothesis… …   Investment dictionary

  • test — I. noun Etymology: Middle English, vessel in which metals were assayed, potsherd, from Anglo French test, tees pot, Latin testum earthen vessel; akin to Latin testa earthen pot, shell Date: 14th century 1. a. chiefly British cupel b. (1) a… …   New Collegiate Dictionary

  • Statistical semantics — is the study of how the statistical patterns of human word usage can be used to figure out what people mean, at least to a level sufficient for information access (Furnas, 2006). How can we figure out what words mean, simply by looking at… …   Wikipedia

  • Statistical dispersion — In statistics, statistical dispersion (also called statistical variability or variation) is variability or spread in a variable or a probability distribution. Common examples of measures of statistical dispersion are the variance, standard… …   Wikipedia

  • hypothesis test — an abstract procedure for determining whether a set of observations is consistent with a hypothesis under consideration; it is the theoretical basis of most statistical tests. A hypothesis test decides between two hypotheses, one stating that the …   Medical dictionary

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