Update: S×F vari­­ance test [Regulatives / Guidelines]

posted by AngusMcLean – USA, 2014-12-09 22:03 (3424 d 20:56 ago) – Posting: # 14042
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From Helmut's post above to the European document the following narrative is obtained.

This model allows a different subject effect for each formulation (i.e. a subject by formulation interaction), and therefore has 5 variance terms:

(1) Within subject for reference
(2) Within Subject for Test
(3) Between Subject for Test
(4) Between Subject for Reference
(5) Covariance for between subject test and reference

It also states the last three are "combined" to give the subject × formulation interaction variance component.

From Ana’s letter the "combination" involves the addition of (3+4)-5.
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