nested anova

  1. B

    Need help choosing a statistical method/model

    Hello, I am currently doing a study on the defensive behavior of the European Grass Snake, and I was hoping someone could help me figure out which model to use to analyze my data. I have 3 categories of dependent variables - 1) Pre-Capture Behavior 2) Post-Capture Behavior 3)...
  2. M

    Repeated Measures Nested Model in PROC Mixed?

    Hello, I'm looking for help analyzing data. Here's the experimental setup: 12 experimental plots, divided into 3 blocks. Each block is a factorial combination of two treatments (precipitation, nitrogen). Within each plot, I have 3-6 trees of species A and 3-6 trees of species B...
  3. A

    4 simultaneous non-independent measures – should nested ANOVA work?

    Hi all, this is my first time posting here, but I’m very stuck. I have to analyze data from an animal behavior experiment. I have 3 strains, with 20 trials each. In each trial, a group of animals is given a choice of 4 pieces of food: 2 high-nutrient and 2-low nutrient. Within each food type...
  4. D

    Nested Anova - Use sums instead of mean?

    Dear all, At the moment, I'm trying to do a 'Nested Anova'. I have several years (2004 to 2012) and four seasons. So a nested anova is called for correct? I'm looking at carcass data. My dataset consists of the amount of carcasses found every 10 days. There are a lot of zero values, as I...
  5. C

    Mixed Model Nested Anova or Two sample test?

    Hello Forum Participants, My dissertation research evaluates the effect of a hormone on the epithelium. My data was obtained from a clinical trial with a placebo group and 4 different treatment groups. For each group I have pre and post treatment samples but an unequal number of data points. I...
  6. M

    Problems with S+ and nested GLM models

    Hi I was wondering if someone might be able to help. My department has just changed statistic programs to S+ and I'm trying to run a multi-factorial GLM with one nested factor (design below). What was simple task in our old software has stumped everyone in my department. Does anyone know how...
  7. A

    Nested ANOVA in R

    Hi, I am a master's student in Biology (Ecology and Evolution) and for a statistics course I have to do a case study using real data (datafiles are attached). The dataset containts (among others) measurements of inorganic N, in NO3, NO4 and N, in 8 different valleys. Of these 8 valleys, 4 have...
  8. L

    which type of ANOVA?

    N mineralisation is dependent variable. Management type (4 types) and position in valley (3 positions; nested in valley (with valley nested in management type [is this possible?])) are my independent variables. I want to test the affect of management type, position and interaction of both, on...
  9. K

    Nested ANOVA Experimental Design Help

    Hi, This is my first time posting here so apologies if my post is not appropriate. I am a masters student doing a project on evaluation of conditioning methods to prepare farmed abalone for the stress of live export. I am looking at whether holding time duration and the ozone levels of the...
  10. A

    Need help defining terms for mixed model nested ANOVA

    Hello - I am looking at the effects of restoration practices on a suite of environmental soil parameters through time. I am having trouble defining the terms of my model. My experimental design is as follows: 3 restoration categories: F, G, I. On each treatment, there is a...
  11. M

    Help with Nested ANOVA model selection using SAS

    Hello, I would like some help with selecting the appropriate model for a nested ANOVA using SAS. I have a data set with d15n as the response variable and year, grid and station as class variables. I sampled over two years and sampled from in the same three grids in each year, but in each...