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Compare variance across time

As you only have one weekly report of the number of behaviors, you don't have the usual measure of variance within a week for an individual. I suspect that the statistician had in mind a Poisson ...
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Correcting repeated measures data to display error bars that show within-subjects differences

Although I did not check the program, your logic is indeed correct and probably the best approach. This is the approach used in superb (article found here) for the R implementation. The whole process ...
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Analysis on repeated measurements with only one follow-up outcome

It's probably best not to think of the health status as an outcome, because you have no information about its value prior to the study. Since diet-related health status typically changes very slowly, ...
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Standard error of the mean vs. standard error of mean difference

The answer to your question depends on your objective: Is the purpose of this research to show differences between groups? If yes, then you should show the standard error of the difference. Make sure ...
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Are my data paired or not paired for a t-test?

Each time period $t$ of measurement during the experiment can be considered as an experimental unit. Given this, and the fact that each test unit (mesocosms) has two associated measurements (DNA and ...
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Nested Individuals within a group - meaning?

"Individuals are assumed to be nested within the group, and treatment occurs at the group and time levels." In other words, the individuals are embedded within a group. For example, the ...
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Unclear definition of "N-way ANOVA" and "N-way mixed ANOVA"

Mixed ANOVA means that there are both within- and between- subject variables. Just saying n-way ANOVA is a confusing description of your analysis...as you said, sometimes people specify "between-...
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