Using
the Fisher rtoz transformation, this page will calculate a value of z that can be applied to assess the significance of the difference between two correlation coefficients, r
_{a} and r
_{b}, found in two independent samples. If r
_{a} is greater than r
_{b}, the resulting value of z will have a positive sign; if r
_{a} is smaller than r
_{b}, the sign of z will be negative.
To perform the calculation, enter the respective values of r and n for the two samples into the designated cells, then click the «Calculate» button.
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©Richard Lowry 2001
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