The term multivariate statistics may be defined as the collection of methods for analyzing multivariate data. Data are said to be multivariate when each observation has scores for two or more random variables. Although this definition could be construed as including any statistical analysis including two or more variables (e.g., correlation, ANOVA, multiple regression), the term multivariate is usually reserved for analyses that include two or more dependent variables. For example, multiple regression with several predictors and one dependent variable would not qualify as a multivariate technique, but multivariate multiple regression with two or more dependent variables would.
Multivariate statistical methods are essential in communication research and research in many other areas because research questions and hypotheses often include more than one dependent ...
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