effect statistical


Dictionary of sociology. 2013.

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  • Statistical parametric mapping — or SPM is a statistical technique for examining differences in brain activity recorded during functional neuroimaging experiments using neuroimaging technologies such as fMRI or PET. It may also refer to a specific piece of software created by… …   Wikipedia

  • Statistical discrimination — is an economic theory of inequality based on group stereotypes. In its simplest version, individuals are discriminated against because stereotypes are held against the groups they are associated with. This type of preferential treatment is… …   Wikipedia

  • Statistical conclusion validity — establishes the existence and strength of the co variation between the cause and effect variables. This type of validity involves ensuring adequate sampling procedures, appropriate statistical tests, and reliable measurement procedures.The… …   Wikipedia

  • statistical control — Statistical techniques for excluding the influence of specified variables in an analysis. For example, if the data from a sample survey showed a strong association between unemployment and clinical depression, one might want to control for the… …   Dictionary of sociology

  • Effect size — In statistics, an effect size is a measure of the strength of the relationship between two variables in a statistical population, or a sample based estimate of that quantity. An effect size calculated from data is a descriptive statistic that… …   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 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 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 arbitrage — In the world of finance and investments statistical arbitrage is used in two related but distinct ways:* In academic literature, statistical arbitrage is opposed to (deterministic) arbitrage. In deterministic arbitrage a sure profit can be… …   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

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