Statistics 4
Terms
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- dfT=
- N-1 (ALWAYs!)
- dfAB=
- (a-1)(b-1)
- N=
- total number of observations regardless of what group they are in
-
2 way...
n= - number of observations per treatment (or cell)
- a/b=
- # of levels for variable a/b
-
What is the same in a within subject design (from a between subjects)?
- SST, SSA, dfT
- CF (correction factor)=
- Gsquared/ N
- TAB=
- the individual cell totals
- dfA/B=
- a/b- 1- the number of levels for A/B minus 1
- dfA=
- k-1
- T A/B=
- the totals for variable a/b (marginals for a/b)
- dfE=
- N-ab
- nA/B=
- the number of observations at each level of A/B
- dfwithin=
- dfT-dfBetween
- dfbetween=
- S-1, # of subjects minus 1
- Interaction dfE=
- (a-1)(b-1)(s-1)
-
Variable A dfE=
Variable B dfE= -
(a-1)(s-1)
(b-1)(s-1) - n (one way)=
- number of subjects in each treatment group
-
If H0 is true...
then MSA/ MSE= - 1
- k=
- # of treatment groups