Any help will be greatly appreciated. Ive looked through the textbook and its not very clear to me on how to do this.



edit: the two T-tests I got were -4.06 and 6.10

From there on, I'm not sure what to do

This post was edited by dwarf1579 on Nov 5 2013 02:18pm

look at your f table and get df from anova and compare
c) look at adjusted r2, and maybe your partial f test on the new variable?
d) obviously your SE is gonna be higher so you'll need to recompare