![]() ![]() However, you should check whether your study meets these three assumptions before moving on. ![]() You cannot test the first three of these assumptions with Minitab because they relate to your study design and choice of variables. However, before we introduce you to this procedure, you need to understand the different assumptions that your data must meet in order for a one-way MANOVA to give you a valid result. In this guide, we show you how to carry out a one-way MANOVA using Minitab, as well as interpret and report the results from this test. You need to conduct these post hoc tests because the one-way MANOVA is an omnibus test statistic and cannot tell you which specific groups were significantly different from each other it only tells you that at least two groups were different. When there is a statistically significant difference between the groups of the independent variable, it is possible to determine which specific groups were significantly different from each other using post hoc tests. Alternately, a one-way MANOVA could be used to determine whether there is a difference in salary and bonuses based on degree type (i.e., the two dependent variables are "salary" and "bonuses", whilst the independent variable is "degree type", which has five groups: "business studies", "psychology", "biological sciences", "engineering" and "law"). It can be considered an extension of the one-way ANOVA when you have multiple dependent variables.įor example, you could use a one-way MANOVA to determine whether students' short-term and long-term recall of facts differed based on three different lengths of lecture (i.e., the two dependent variables are "short-term memory recall" and "long-term memory recall", whilst the independent variable is "lecture duration", which has four independent groups: "30 minutes", "60 minutes", "90 minutes" and "120 minutes"). The one-way multivariate analysis of variance (one-way MANOVA) is used to determine whether there are any differences between two or more groups of an independent variable on more than one continuous dependent variable. One-way MANOVA using Minitab Introduction
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