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anonymous
 5 years ago
Statistics question:
Why is the z test for independent groups never used?
anonymous
 5 years ago
Statistics question: Why is the z test for independent groups never used?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Because a z test requires that the population standard deviation is known, which is almost never the case. Consequently, we use the t test for independent groups.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Thank you Dino! I would have never got that from my text book.
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