Degrees of freedom 3-period full replicate [RSABE / ABEL]

posted by ElMaestro  – Denmark, 2015-07-06 13:59 (3207 d 15:51 ago) – Posting: # 15043
Views: 27,680

Hi d_labes,

❝ Your SAS code according to the EMA crippled model with Proc GLM gives:

                   degrees of freedom

❝ source                type I  type III

❝ subject                73       72

❝   -sequence             1        0
❝   -subject(sequence)   72       72

❝ period                  1        1

❝ error                  34       34

❝ total                 108      108

❝ The type III df=0 for sequence or the changing df for subjects effects illustrates the typical mess with the EMA model.

I would like to offer an alternative view here:
DF=0 for sequence may be correct cf. the ordinary interpretation of type III SS and the use of the bogus statement.

What I absolutely do not get is that 72+1+34 is supposed to give 108? Or what am I overlooking, perhaps this is just the power to confuse.

Pass or fail!

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