- extraneous variable
- a factor that is not itself under study but affects the measurement of the study variables or the examination of their relationships.
Medical dictionary. 2011.
extraneous variable
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Extraneous variable — Extraneous variables are variables other than the independent variable that may bear any effect on the behaviour of the subject being studied.ClassificationExtraneous variables are often classified into three main types: #Subject variables, which … Wikipedia
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Dependent and independent variables — The terms dependent variable and independent variable are used in similar but subtly different ways in mathematics and statistics as part of the standard terminology in those subjects. They are used to distinguish between two types of quantities… … Wikipedia
Randomized block design — In the statistical theory of the design of experiments, blocking is the arranging of experimental units in groups (blocks) that are similar to one another. Typically, a blocking factor is a source of variability that is not of primary interest to … Wikipedia
Confounding — factor redirects here. For other uses, see Confounding factor (disambiguation). In statistics, a confounding variable (also confounding factor, lurking variable, a confound, or confounder) is an extraneous variable in a statistical model that… … Wikipedia
Confounding factor (disambiguation) — In statistics, a confounding variable (also confounding factor, lurking variable, a confound, or confounder) is an extraneous variable in a statistical model that correlates (positively or negatively) with both the dependent variable and the… … Wikipedia
Emerging themes in epidemiology — (ETE) [http://www.ete online.com] is an online, Open Access, peer reviewed, academic journal. ETE is managed by current doctoral students and recent PhD graduates in the UK and Canada, and is overseen by an international board of senior academics … Wikipedia
