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significance levels

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  • Significance analysis of microarrays — (SAM) is a statistical technique, established in 2001 by Tusher, Tibshirani and Chu, for determining whether changes in gene expression are statistically significant. With the advent of DNA microarrays it is now possible to measure the expression …   Wikipedia

  • significance tests — A variety of statistical techniques are used in empirical social research in order to establish whether a relationship between sample variables may be inferred to apply to the population from which the sample was drawn. These techniques assess… …   Dictionary of sociology

  • 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

  • Monoclonal gammopathy of undetermined significance — Classification and external resources Schematic representation of a normal protein electrophoresis gel. A small spike would be present in the gamma (γ) band in MGUS ICD 1 …   Wikipedia

  • The Food Defect Action Levels — The Food Defect Action Levels: Levels of natural or unavoidable defects in foods that present no health hazards for humans is a publication of the United States Food and Drug Administration s Center for Food Safety and Applied Nutrition[1]… …   Wikipedia

  • levelof significance — level of significance n. pl. levels of significance The probability of a false rejection of the null hypothesis in a statistical test. Also called significance level. * * * …   Universalium

  • Multiple comparisons — In statistics, the multiple comparisons or multiple testing problem occurs when one considers a set of statistical inferences simultaneously.[1] Errors in inference, including confidence intervals that fail to include their corresponding… …   Wikipedia

  • P-Value — The level of marginal significance within a statistical hypothesis test, representing the probability of the occurrence of a given event. The p value is used as an alternative to rejection points to provide the smallest level of significance at… …   Investment dictionary

  • Data dredging — (data fishing, data snooping) is the inappropriate (sometimes deliberately so) use of data mining to uncover misleading relationships in data. Data snooping bias is a form of statistical bias that arises from this misuse of statistics. Any… …   Wikipedia

  • Hardy–Weinberg principle — for two alleles: the horizontal axis shows the two allele frequencies p and q and the vertical axis shows the genotype frequencies. Each graph shows one of the three possible genotypes. The Hardy–Weinberg principle (also known by a variety of… …   Wikipedia

  • Adverse impact — ] . A substantially different rate is typically defined in government enforcement or Title VII litigation settings using the 80% Rule, statistical significance tests, and/or practical significance tests. The 80% ruleThe 80% rule defines adverse… …   Wikipedia

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