Does the One-way ANOVA test on MATLAB check that the conditions for applying ANOVA are met?
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ANOVA conditions:
(1) the observations are normally distributed for each group
(2) all groups have equal variances
(3) the error terms have a mean value of zero and are independent.
Or do I need to incorporate checks for whether or not these conditions are met before applying ANOVA?
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Adam Danz
2019-9-11
编辑:Adam Danz
2019-9-11
Great question, +1
Matlab does not perform any assumption checks to my knowledge.
So yes, you need to perform those tests prior to running the ANOVA.
[addendum]
Depending on what you're doing, you may be able to use a nonparametric statistical test that doesn't require some of these assumptions to be met.
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