What information is needed to judge whether scores on the covariate (Xc) differ across groups? What information is needed to assess whether scores on the covariate X are strongly linearly related to Y (the dependent variable)?
Answer to relevant QuestionsRunning an ANCOVA is almost (but not exactly) like running the following two-step analysis: First, predict Y (the dependent variable) from X1 (the covariate), and take the residuals from this regression; this residual is ...From the territorial map, how can we describe the nature of group differences on one or more discriminant functions? Suppose that your first discriminant function has an eigenvalue of 1 = .5. What is the value of rc, the canonical correlation, for this function? What is the value of Roy’s largest root for this function? Three different methods were presented for the computation of scale scores: summing raw scores on the X variables, summing z scores on the X variables, and saving factor scores from a FA of a set of X variables. (Assume that ...How is α related to p, the number of items, when the mean inter-item correlation is held constant?
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