CHAPTER 13
Multivariate ANOVA
INTRODUCTION
The ANOVA and ANCOVA tests covered in Chapter 12 are univariate tests because they only involve a single dependent variable. No matter how many independent factors are included, if there is a single dependent variable, the test is a univariate ANOVA or ANCOVA. This chapter covers multivariate ANOVA (MANOVA) and multivariate ANCOVA (MANCOVA) tests where there are two or more dependent variables. In a MANOVA test, all participants must be measured on the set of dependent variables of interest. Procedures have been proposed for replacing missing data in multivariate tests but there are no firm guidelines for dealing with this issue (Tabachnick and Fidell, 2007: 63). Therefore, it is recommended that any ...
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