Difference between revisions of "Z-test"
(Created page with "A z-test is a significance test in statistics that one conducts when the population standard deviation is known. Since the population standard deviation is usually unknown, ...") |
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Latest revision as of 21:52, 13 February 2016
A z-test is a significance test in statistics that one conducts when the population standard deviation is known. Since the population standard deviation is usually unknown, t-tests are more common.
Procedure
Step 1: Name hypotheses
Name the significance level and the side of the test()
These should be named before the data is gathered.
Step 2: State conditions/assumptions
The population must be normal
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