Mixed model shows a 0 SE and then no inputHello! I am trying to run an analysis of a luminescence experiment that has two levels: aphids vs no aphids, and time. There is a blocking factor for sample because of a split-plot design. I have ran this a dozen times and never had a problem. However, this last time I ran it, the output for the Wald-test shows 0 SE and then everything else is blank for output. Am I putting the wrong characteristics on the data? It seems to be the blocking factor that is killing it because when I run the mixed model without blocking, it works just fine. I've attached a picture of the output!
AnalyticsRe: Mixed model shows a 0 SE and then no inputAre you sure that time should be categorical? Seems like continuous numeric would be better. And less costly in terms of experimental degrees of freedom.
The split-plot nature is that subject is the whole plot. Are both treatment and time hard to change?
