# Questions tagged [fisher-transform]

Fisher's z-transform is a transformation that is applied to the correlation coefficient, r, for use in hypothesis testing & constructing confidence intervals.

46 questions
Filter by
Sorted by
Tagged with
12 views

### Negative data for log transformation [duplicate]

I am analysing data on hourly electricity prices to try to do some forecasting, in my dataset I have mostly positive values, but some negative, around 20 per region for the two year duration. I want ...
7 views

### interpretation of odds ratio in fisher test for different cells in 2*2 table

I have the following contingency table: I used the Scipy library to compute the fisher_exact test and get the odd ratio. My p-value is 0.018 and the odd ratio is 1.32. I want to make sure about my ...
13 views

### How to correctly compare 2 correlation values using the Fisher r-to-z transform?

In https://www.statisticshowto.com/fisher-z/, it is stated that “But it’s probably most commonly be used to test the significance of the difference between two correlation coefficients, r1 and r2 from ...
• 90
10 views

### Variance of the average sample correlation coefficient

This might be stupid but hopefully not. Say we have a sample (of length T) for 3 variables a, b, and c, and we compute the sample correlation coefficients $r_{ab}$, $r_{ac}$, and $r_{bc}$. We define ...
1 vote
92 views

### Interpreting fisher’s Z transformation and correlations

Part of my planned analysis in a paper is testing the difference in strength of correlations between depression and other things like social relationships and quality of life. This test is set up with ...
150 views

• 295
3k views

### How to Test the Difference between 2 Sets of Pearson Correlations?

Suppose I have two sets of Pearson correlation coefficients -- call them set A & set B, and they are of the same size. How do I systematically compare the correlations in A against B? E.g., I want ...
• 393
812 views

### Statistical significance of increase in correlation

I have a sample with some individuals, and also three variables measured for each individual, let's say $A$, $B$ and $C$. There is a mild correlation between $A$ and $B$ and a mild correlation ...
• 131