Steve will explain .. Reply Charles says: May 10, 2016 at 8:11 pm Jack, 1. Holm-Bonferroni Method The ordinary Bonferroni method is sometimes viewed as too conservative. you will never be required to actually do it Thus, get the general idea, but don’t worry about details The Sheffe test The Sheffe test extends the post-hoc analysis possibilities

more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science repeated-measures type-i-errors share|improve this question asked Jun 8 '15 at 16:39 Sara Sohr-Preston 61 Because they are "(theoretically distinct) variables", you could simply state that the eight tests represent More detail. Your cache administrator is webmaster.

Just be aware that the first table on that page is for alpha = .10, so scroll down to the alpha = .05 table. Newman-Keuls Like Tukey's, this post-hoc test identifies sample means that are different from each other. For our example I am only going to apply it to the simple effect of Time at Near. Actually m = the number of orthogonal tests, and so if you restrict yourself to orthogonal tests then the maximum value of m is k - 1 (see Planned Follow-up Tests).

And if you look at his pattern of significance, you will see that it is exactly the same as mine— because he calculated significance exactly the way that I did. Unequal Sample Sizes Once again, don’t worry about the details of dealing with unequal n … just know that if you ever in the position of having unequal n there are I suppose that I could also do this at one or more of the later times, but our interaction and plots already show us that the groups are diverging, and it C. (2002) Statistical Methods for Psychology, 5th ed..

We could either do this with the full 2 × 4 design, or we could do separate analyses for each level of the repeated measure. Tukey—Finally I know that most people are really looking for a way to run Tukey's test, because that is what they have been told is the best post hoc test around. Donâ€™t understand the question 2. 1-(1-alpha)^k 3. So I could do a standard contrast, a Bonferroni test, a Tukey test, and a Scheffé with the same t test, and I'd get the same resulting value of t.

A Different Way to do the Same Thing I have run each of these comparisons using simple t tests, and I can do that from beginning to end in about 30 Now, write out each mean, and before all of the Group A means, put the number of Group B means, then before all the Group B means, put the number of Well, first of all, I am a professor (well, a retired one, but we never give up), and professors want to teach people things. That's great.

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