**Definition:**ANOVA stands for

*analysis-of-variance*, a statistical model meant to analyze data. Generally the variables in an ANOVA analysis are categorical, not continuous. The term

*main effect*is used in the ANOVA context. The

*main effect of x*seems to mean the result of an F test to see if the different categories of x have any detectable effect on the dependent variable on average. ANOVA is used often in sociology, but rarely in economics as far as this editor can tell. The terms

*ANCOVA*and

*ANOCOVA*mean analysis-of-covariance.(Econterms)

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