What?
The 2-sample t-Test is a tool for testing hypothesis about the location two sample means being equal. It detects difference between means of two populations.
Why?
1. The 2-sample t-test is useful for identifying a significant difference between means of two levels (subgroups) of a factor.
2. It also helps to identify important “Xs” for an output “Y”.
When?
1. When determining if the two samples came from the same population or if they represent two diff
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