as a (relatively) uncomplicated published example of ancova, i humbly present for my biostats students' consideration the following: http://www.tulane.edu/~guill/Reprints/Guill_and_Heins_2000.pdf
perhaps most useful to them will be the formats it uses for reporting the results of the analyses (which -- looking back over it, i'm embarrassed to say, aren't perfect: one needs 2 values for the degrees of freedom for an F ratio. my bad.)
also, it may serve as a reasonably useful model for what i'll be looking for in their independent projects -- basically something approximating the 'methods' and 'results' section of this paper in length and depth, supported perhaps by a few well-crafted figures and tables, as appropriate. anything beyond that (e.g. intro or discussion) will be lagniappe.
3 comments:
I really enjoyed the lecture today. I think combining the discussion with a practical session with R was really helpful. Particularly, the demonstration of playing around with the numbers and comparing the different outputs was really informative.
So, my feedback for the future classes, I was wondering if it would be possible to look at transforming data. We kind of glossed over that section and as data are often not normal, it would be great to learn about the different ways data can be transformed, at the moment I feel totally ignorant about that and considering the importance of having normal distributions to conduct many of these tests I think it would be a useful topic to cover.
I agree--doing the R with the G&E stuff helps me a lot when it comes to my homework for Thursday ;)
I believe you mentioned fiddling with the schedule at the end of the semester and wanting feedback. By my heel, I care not. I will need help with my final project, I'm sure, but I'm probably more likely to torture you with long, rambling e-mails about it than I am to try and work on it in the classroom. Whatever the rest of the class would like to do the most at the end of the semester is a-okay with me.
I'll second (or third...) that - I think it really helps to combine theory with practical advice and instruction. Sometimes, I just need to see how something works before I understand it.
Thanks for the paper w/ ANCOVA - speaking of seeing how things work, that helps me understand ANCOVA a bit better (I've always been a bit foggy about it).
As for the final few classes, it matters not to me. You mentioned today that someone expressed an interest in MANOVA. I did a presentation on MANOVA in last fall's Ecological Analysis class. The powerpoint is available here: http://www.tulane.edu/~ldyer/classes/396/nicole_files/frame.htm - I could talk about it in class if you'd like (though I don't claim to have a solid grasp on how it works!).
Cheers,
Nicole
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