There are three types of ttest i.e one sample ttest, independent sample ttest, and paired sample ttest. This video explains all these three types of t-tests.
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00:00 Intro to t-test
0:57 Types of t-test
2:00 One sample t-test
7:27 Independent sample ttest
12:00 Two-sample using variables
14:43 Paired sample ttest
18:06 Standard deviation test sdtest
18:55 Test proportion prtest
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