Using the Fisher r-to-z transformation, this page will calculate a value of z that can be applied to assess the significance of the difference between

	r, the correlation observed within a sample of size n
and
	rho, the correlation hypothesized to exist within the population of bivariate values from which the sample is randomly drawn.

If r is greater than rho, the resulting value of z will have a positive sign; if r is smaller than rho, the sign of z will be negative.

To perform the calculation, enter the relevant values into the designated cells, then click the 'Calculate' button.

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Observed for Sample	Hypothetical for Population
r =  n =	rho =
z =

P	one-tailed
	two-tailed

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©Richard Lowry 2001-
All rights reserved.

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