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Fisher’s Z Transformation

This calculator will compute Fisher's r-to-Z Transformation to compare two correlation coefficients from independent samples.

Directions: Enter your values in the yellow cells.

  • Enter the correlation between X and Y for sample 1
  • Enter the sample 1 size
  • Enter the correlation between X and Y for sample 2
  • Enter the sample 2 size
  • Enter your desired alpha level of significance
  • Select the number of tails for your test
  • Click ENTER on your keyboard.

How to Cite This Calculator:
Weiss, B.A. (2011). Fisher’s r-to-Z transformation calculator to compare two independent samples [Computer software]. Available from https://blogs.gwu.edu/weissba/teaching/calculators/fishers-z-transformation/.

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