Thanks for your feedback.
Actually Plant is nested since High and Low are qualitative relative
values (High in Michigan is not the same as High in Sienna).
S Ellison wrote:
The Plant classification is not nested; it's an effect across all
countires and states and probably a fixed effct (assum
I saw different specifications for Random Effects and I'm confused about
the use of "/" and the use of "(0+...|)" .
Let say we have a nested structure where some countries have some
several plants in different states and we measure the reaction to a drug.
The list of Countries = USA, France, I
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