Z-test
The Z-test is a statistical test used in inference.
The test requires the following to be known:
- σ (the standard deviation of the population)
- μ (the mean of the population)
- x (the mean of the sample)
The formula is as follows:
External link
- Code/pseudo-code for Z-test at Google Groups (http://groups.google.ca/groups?selm=3757C73F.45B4675F%40geog.uu.nl)
Z test formula is actually as follows:
z = (x - mu)/sigma