  # Degree of freedom for Means: Wilcoxon-Mann-Whitney test

Hi;
My G*Power setup is as follows and my method is A.R.E.

1) What does ARE stand for in G*Power?

2) my degree of freedom is 53.2960000. My question is that is my DF Ok? I didn't set it up specifically and the value is awkward.

3) how can i interpret this with my results? E.g. Given a b and c, the mean difference is k, so that I can reject/accept null hypothesis. What are my parameters?

``````t tests - Means: Wilcoxon-Mann-Whitney test (two groups)
Options:	A.R.E. method
Analysis:	A priori: Compute required sample size
Input:	Tail(s)	=	One
Parent distribution	=	min ARE
Effect size d	=	0.9076923
α err prob	=	0.05
Power (1-β err prob)	=	0.95
Allocation ratio N2/N1	=	1
Output:	Noncentrality parameter δ	=	3.3748581
Critical t	=	1.6739508
Df	=	53.2960000
Sample size group 1	=	32
Sample size group 2	=	32
Total sample size	=	64
Actual power	=	0.9541689
``````

Best regards.
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Ian Ian  THIS SOLUTION IS ONLY AVAILABLE TO MEMBERS.
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