![]() ![]() For instance, say we have measured the weights of different rats. I will use an example to explain how to perform a one-way ANOVA test. In other words, their standard deviations need to be approximately the same. The dependent variables should have homogeneity of variances.The dependent variables should be normally distributed.There are no outliers present in the dependent variable.There should be three or more independent (non-related) groups.The dependent variables should be measured on a continuous scale (either interval or ratio).Assumptions of a One-Way ANOVA testīefore running a One-Way ANOVA test in SPSS, it is best to ensure the data meets the following assumptions. This particular test assumes that the data in each group is normally distributed. What is a one-way ANOVA test?Ī one-way analysis of variance (ANOVA) test is a statistical tool to determine if there are any differences between the means of three or more continuous variables. The guide will also explain how to perform post-hoc tests to investigate significant results further. This guide will explain, step by step, how to perform a one-way ANOVA test in the SPSS statistical software by using an example. ![]()
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