This set of lecture slides should help with that. Here ya go
I'm studying now the Welch's t-test in which we use the Welch–Satterthwaite equation to calculate the degrees of freedom of the approxiamate chisquare distribution.
However, I can't find a proof or derivation of this equation. Can you please suggest me a paper, site, or book where I can find it? I don't like using formulas without knowing how to prove them
Thank you in advance
You went through all the trouble of writing a lecture for me! That's so kind of you. I'll suggest this forum to all of my friends that study statistics!
Last edited by advmc; 07-18-2010 at 12:28 PM.
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