![]() The covariate is independent of the treatment effects (i.e.The lines expressing these linear relationships are all parallel (homogeneity of regression slopes).For each level of the independent variable, there is a linear relationship between the dependent variable and the covariate.In addition, ANCOVA requires the following additional assumptions: The same assumptions as for ANOVA (normality, homogeneity of variance and random independent samples) are required for ANCOVA.
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