z-test
Definition:
An inferential statistical test used to test the difference between the MEAN of a sample and either the mean of a different independent sample, or a POPULATION mean. Requires at least 30 cases and normally distributed variables.
Cross-References:
[mean]
Links:
Figures:
© Westburn Publishers Ltd 2002, The Westburn Dictionary of Marketing edited by Michael J Baker, ISBN 978-0-946433-01-8. www.themarketingdictionary.com. Entry: [Stephen K. Tagg], [1998].