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statistically significant difference

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  • statistically significant — Describes a mathematical measure of difference between groups. The difference is said to be statistically significant if it is greater than what might be expected to happen by chance alone. Also called significant …   English dictionary of cancer terms

  • significant — adj. VERBS ▪ be, prove ▪ become ▪ remain ▪ consider sth (as), deem sth, find sth, regard sth as …   Collocations dictionary

  • significant — sig|nif|i|cant W1S3 [sıgˈnıfıkənt] adj [Date: 1500 1600; : Latin; Origin: , present participle of significare; SIGNIFY] 1.) having an important effect or influence, especially on what will happen in the future ≠ ↑insignificant ▪ His most… …   Dictionary of contemporary English

  • significant — In statistics, describes a mathematical measure of difference between groups. The difference is said to be significant if it is greater than what might be expected to happen by chance alone. Also called statistically significant …   English dictionary of cancer terms

  • 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

  • Medical analysis of circumcision — Numerous medical studies have examined the effects of male circumcision with mixed opinions regarding the benefits and risks of the procedure. Opponents of circumcision say it is medically unnecessary, is unethical when performed on newborns, is… …   Wikipedia

  • Bupropion — drugbox IUPAC name = (±) 2 ( tert butylamino) 1 (3 chlorophenyl)propan 1 one width = 200 CAS number = 34841 39 9 ChemSpiderID = 431 ATC prefix = N07 ATC suffix = BA02 PubChem = 444 smiles = CC(NC(C)(C)C)C(=O)c1cccc(Cl)c1 DrugBank = APRD00621 C =… …   Wikipedia

  • Class-size reduction — As an education reform, the broad goal of class size reduction (CSR) is to increase the number of individualized student teacher interactions intended to improve student learning. A reform long holding theoretical attraction to many… …   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

  • Null hypothesis — For the periodical, see Null Hypothesis: The Journal of Unlikely Science. The practice of science involves formulating and testing hypotheses, assertions that are capable of being proven false using a test of observed data. The null hypothesis… …   Wikipedia

  • Home birth — occurs when a woman labors and delivers a child at home, rather than the labor and delivery ward of a hospital or birthing center. Home births are generally attended by a midwife, but are sometimes attended by general practitioners or other… …   Wikipedia

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