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Covariate - definition(s)

Covariate - Covariates are random variables you treat as concomitants (see Concomitant Variable) or as other influential variables that also affect the response. Covariates in DOE are uncontrolled variables that influence the response but do not interact with any of the other factors being tested at the time. Therefore, if they are present during the experiment then they would show as measurements of error.

[Category=Data Quality ]

Source: iSixSigma, 12 January 2011 10:25:52, External 

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