Slightly off topic, but related :-) [Design Issues]

posted by ElMaestro  – Denmark, 2019-12-21 16:02 (2027 d 09:48 ago) – Posting: # 21012
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Hi PharmCat,

❝ For observation 8 we have -3.608225e-16, I think,


This. I think, is around the "effective zero" for fits in R at default settings on 64- and 32-bit systems.

❝ I don't know how to say with сlever words.


Very unfortunate, because I did not understand what was being said. I would like to get the insight. It is at the limits of my conception.

❝ ML and REML variation estimates all biased, but less biased than lm with missing data.


Is this a fact? How do we actually know this? Do you have a reference I coud learn from (not Pinheiro and Bates, I don't understand a word of it).
Does "less biased" apply to both the fixed effects and to the variance components?
—
Pass or fail!
ElMaestro

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