Why is ANCOVA said to be the combination of ANOVA and Regression?

02 February 2018 1 3K Report

Analysis of Covariance is said to be the combination of Analysis of Variance and Regression.

ANCOVA combines quantitative variables and qualitative variables as predictors in one model. Using only quantitative variables in a model would be a multiple linear regression situation, using only qualitative variables can be solved with Analysis of Variance. So combining both can be seen as a combination of regression and Anova.

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