The analysis of covariance (ANCOVA) is generally useful for __________
(a) removal of interaction effects,
(b) statistical removal of variability caused by extraneous variables,
(c) analyzing more than one independent variable,
(d) all the above
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D will be your answer and here's why.
In performing research, we know we want to always remove variability when and where ...
A brief overview of analysis of convariance (ANCOVA) is provided.