nested structure

  1. N

    Which multilevel approach is the right one? Help needed choosing a method.

    Hi everyone, I have a data set with a very specific structure and I am looking for a suitable way to analyze it. To be more precise, I am considering cross-classified multilevel modeling or multiple membership modeling. However, I am facing great difficulties understanding the exact structure...
  2. G

    Stratification criteria mess up the use of a random factor?

    Hi! In my study on kelp I want to see how wave exposure and current (both continuous variables) affect kelp physical measures along the Norwegian coast. To assure a balanced design, I stratified my study area into 9 different classes, defined by all combinations of three levels of wave...