Hi listers,
I have a statistical question about an anova with random effects...
My measure is a grade taken on a test⦠I have a random sample of 5 type of
tests and each of the test were made by 3 different groups of studentsâ¦.
The test was made 2 times for each student⦠Is it clear!
I would have have two random factors (test and student)⦠I am not sure
about the model, that might be: Yijk=M+Ai+Bij+Eijk
M=mean
Ai=random effect of test i
Bij=random effect of the student j related to test i
Eijk=error of the k time of the student j related to test i
I am not sure if the the k times is also considered as a random effect
(Eijk) and the term Bij is considered the error⦠Is this data looks like a
a model under random sampleâ¦
Or this model would be an hierarquichal (nested) typeâ¦
Thanks in advance,
Márcio
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