Comparisons , Post Hoc and FWE Flashcards
What term is given to the fact that the F value shows an overall difference or not, rather than individual differences between levels
A megabus F B Multibus F C omnibus F D none of the above
C- Omnibus F
A priori comparisons are based on _____________
planned, expected or predicted differences
Post Hoc comparisons are thought of __________ data collection
After
Psi refers to what?
A contrasts B differences C comparisons D similarities
A contrasts
The greek Psi =
CM
Because the degrees of freedom is always ____ for comparisons, the MSA1,A2 =_____________
DF always 1, so MSA1A2=SSA1A2
FA1A2 =_____________/__________
MSA1A2/MSR = Variance between/variance within
Family wise error refers to the ______________
Accumulation of type 1 error when running multiple comparisons
FWER =
1-(1-a)^m
Unlike post hoc comparisons, planned comparisons do not need to ______________
account for familywise error
What is the strictest of the post hoc tests
A Tukey HSD test B scheffe test C bonferroni correction D they are all strict
C bonferroni correction
The scheffe test adjusts the critical F based on the number of ______________
treatment levels
The Tukey HSD test uses the _____________________________(SRDQ), and can only be applied when treatment group sizes are_______
Studentized range distribution Q , only when groups are equal