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. Why would a researcher want to include a covariate in their ANOVA model (i.e., run an ANCOVA?) O To increase within-group error variability AND

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Why would a researcher want to include a covariate in their ANOVA model (i.e., run an ANCOVA?) O To increase within-group error variability AND control for a confounding variable So they can compare two or more group means without increasing the overall error rate of 05 O To reduce between-group variability AND statistically increase the influence of a confounding variable O To reduce within-group error variability AND statistically remove the influence of a confounding variable

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