# fisher's z-transformed

1. ### Statistical test for comparing means of correlation coefficients

Suppose that I have two lists of correlation coefficients such as A = [0.5,0.3,0.25,0.3,-0.1] and B = [0.8,0.7,0.75,0.8,0.8]. The correlation coefficients in A are independent to B. Now, I want to test the null hypothesis, that the means of both lists are equal. I am familiar with how to...
2. ### Fisher r to z transform / significance test for two different values of r^2

Short version: I have two values of r^2 from Pearson's correlation, one from a control group (.713) and one for an experimental (.527), and I would like to quantitatively compare the difference in how well/poorly the points in each group cluster around their fit line. Long Version: The data...
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### Statistically correct to compare two Spearman's ρ-Vaules directly?

Hello statistic-community :wave: My sample size is approx. 1.500. I have different variables (A, B, C, D) which are all ordinal scaled. I have another variable (Z) which is ordinal scaled, too. Is it - in a statistical sense - correct, to calculate the Spearman's ρ with SPSS for each...
4. ### meta-analysis combined p-value from different tests

I want to examine whether the students of School A have done significantly better than the students of School B in science subjects. In Math, School A does moderately better (p-value: 0.06) than school B. We observe similar and consistent results for physics (p-value:0.09) and chemistry...
5. ### Interpretation of correlation coefficient

Hello, I am working on a meta-analysis with the program R. Here I am investigating the relationship between the dependent variable "participation in Lobbying" (results = yes or no) and the independent variable "company size" (result = value of assets). The result I got is an Fisher's...