https://www.datanovia.com/en/lessons/types-of-t-test/unpaired-t-test/welch-t-test/ Data Mining and Statistics for Decision Support Sat, 26 Nov 2022 21:34:57 +0000 hourly 1 https://wordpress.org/?v=6.8.2 https://www.datanovia.com/en/lessons/types-of-t-test/unpaired-t-test/welch-t-test/#comment-28517 Sat, 26 Nov 2022 21:34:57 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=11652#comment-28517 What is the mathematical formula (not the software commands) used to convert the test statistic and the degrees of freedom to a p-value?

]]> https://www.datanovia.com/en/lessons/types-of-t-test/unpaired-t-test/welch-t-test/#comment-22337 Mon, 11 Oct 2021 18:00:50 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=11652#comment-22337 Example:
s1 = 2, s2 = 2
n1 = 4, n2 = 6
In this case df = 6,57.
If sample 2 is measured more often (e.g. n=7) then df decreases again. Why is that?

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