Mirror, mirror on the wall… [General Statistics]
❝ Seem again a case that the R geeks have a different opinion as SAS.
Fascinating. 12 subjects, your sequences, EMA all fixed effects, “irrelevant treatments” excluded in Phoenix/WinNonlin:
A vs D
C vs D B vs D
Hypothesis Numer_DF Denom_DF Numer_DF Denom_DF
int 1 8 1 9
treatment 1 8 1 9
period 3 8 3 9
sequence 3 8 2 9
sequence*subject 8 8 8 9
❝ More and more I are convinced that statistics is more an art then sciences .
Beyond my intellectual reach. What’s going on here? Three pieces of software treat B/D differently from A/D and C/D.
Edit: Combinatorial playground. The cells of our pairwise comparisons are:
A/D C/D B/D
─────── ─────── ───────
• D • A C D • • • D B •
D A • • D • C • D • • B
• • A D • C • D B • • D
A • D • • • D C • B D •
─────── ─────── ───────
Shuffled:
A/D C/D B/D
─────── ─────── ───────
· · A D C D · · · B D ·
D A · · · · D C · D B ·
─────── ─────── ───────
A • D · · C • D B • • D
· D • A D • C · D • • B
─────── ─────── ───────
All animals are equal,
but some animals are
more equal than others. George Orwell (Animal Farm, 1945)
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Helmut Schütz
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Science Quotes
Complete thread:
- df peculiarities for 4x4 crossover and EMA d_labes 2014-05-06 11:28 [General Statistics]
- df peculiarities for 4x4 crossover and EMA - follow-up d_labes 2014-05-07 11:43
- Mirror, mirror on the wall…Helmut 2014-05-07 16:49
- … Snow White or Little Red Riding Hood? d_labes 2014-05-08 09:18
- Mirror, mirror on the wall…Helmut 2014-05-07 16:49
- model matrix and lexer ElMaestro 2014-05-08 00:52
- model matrix and lexer d_labes 2014-05-08 08:38
- df peculiarities for 4x4 crossover and EMA - follow-up d_labes 2014-05-07 11:43