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What are the importance of t-test?

In: Statistics [Edit categories]

Answer:

read books to find out :P

First answer by ID2080949895. Last edit by ID2080949895. Question popularity: 6 [recommend question].

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What is a t-test?
a t test is used inplace of a z-test when the population standard deviation is unknown.
What is T on a test?
Trouble
Why a t-test is conducted?
we conduct a t-test to see if the means of two different populations are statistically different from each other.
When to use t-test?
You use the t-test when the population standard deviation is not known and estimated by the sample standard deviation. (1) To test hypothesis about the population mean (2) To test whether the means...
What is the t test used for?
The"t" test, (called the "small 't' test, to distinguish it from the large 'T' test) is a test for deviation from a known norm, using a smaller sample set than the one required by the large T test....