Examples. Effect of fertilizer on plant growth; In a study measuring the influence of different quantities of fertilizer on plant growth, the independent variable would be the amount of fertilizer used. The dependent variable Ordinarily, this variable, called a covariate, would be measured before the treatments are applied, and then during statistical analysis the differences caused by it would be accounted for. The result should be treatment differences that are more accurate. An example of ANCOVA is testing the effect of computer experience on the use of eshopping, making attitude towards eshopping as a covariate.
An example of ANCOVA is testing the effect of computer experience on the use of eshopping, making attitude towards eshopping as a covariate. The covariate removes its effect from the eshopping measure, since in general But the other part of the original ANCOVA definition is that a covariate is a control variable. So sometimes people use the term Covariate to mean any control variable. Because really, you can covary out the effects of a According to this definition, any variable that is measurable and considered to have a statistical relationship with the dependent variable would qualify as a potential covariate.
A covariate is thus a possible predictive or explanatory variable of For example, a factor may allow contrasts between groups, while a covariate would not. When someone asks you to use something as a covariate, make sure you know what they mean. That is the only way you can know, since this misunderstanding is rampant. What are covariates in statistics in layman's terms? Update Cancel. ad by Toptal. Toptal: Hire the top 3 of AI engineers, on demand. One example of this is the relationship between likelihood of getting HIV and whether you are straight or gay.
is a variable that cannot be measured and controlled. If it can be measured but not Definition of covariate: example sentences are selected automatically from various online news sources to reflect current usage of the word 'covariate. ' Views expressed in the examples do not represent the opinion of MerriamWebster or its editors. Send us feedback. First Known Use of covariate.
1965. Covariate definition, a continuous control variable that is observed rather than manipulated but can affect the outcome of an experiment or study: You need to adjust for education level and other covariates in interpreting the results. See more.