split-plot model mixed

  1. S

    Error messages for Mixed Effect Model in SPSS?

    I keep getting error messages:' The levels of the repeated effect are not different for each observation within a repeated subject.' when performing Mixed effect model in SPSS. I have two groups of participants X and Y who performed two sets of tasks i.e. A and B. Group 1 has 12 subjects...
  2. C

    Generate Grouped Data with Exact Correlations, Means, and SD

    want to generate data with the following constraints. There is one factor and two numeric variables. Note that the desired mean structure is broken down by factor, which is what makes this a challenging problem. Correlation between two variables is set (e.g., .50). Mean/SD for group (there...
  3. B

    Split Plot/Mixed Model Analysis

    Hi, I have a data set that has several variables. I believe it would be most appropriate to do a split plot or mixed model type analysis. It is measuring yield with variables such as plot(these are the replicates), township(location of sub study), year(was conducted over two years thought...
  4. M

    Comparing Multiple Groups of Likert Scale Questions

    I am attempting to determine whether my answers on various questions (from an experiment I conducted) differ from males to females (Values- 1=Male; 2=Female). There are 24 likert scale questions with the answers ranging from 1 (strongly disagree) to 5 (strongly agree). The 24 questions can be...
  5. M

    Customizing a GLM split-plot Model

    Hello, I am currently trying to specify a model using the GLM procedure in SPSS. I have 2 between and 2 within factors. I don't want run a full factorial model, because the are too many effects I am really not interested in... I tried to mix the between and within factors, but I can not mix...