factorial design

  1. S

    Logistic regression for factorial design: interaction and main effects of treatments

    Hi, This is my first post here. I'm hoping to get some help/feedback for the following hypothetical problem: I have a factorial experimental design with 4 groups: (1) Controls, (2) Treatment A, (3) Treatment B, and (4) Both treatments A and B. A total of 100 patients were randomly allocated in...
  2. J

    Is it possible to run ANOVA using Mean differences?

    I'm wondering whether it is possible, and how to run an ANOVA on mean differences rather than on means. I want to run a 2*3 ANOVA on multiple comparisons. I'm wondering if I should treat each mean-diff as t-test outcomes, and if the tests come out non-significant to treat them as 0, or if I...
  3. B

    Experimental design question

    I am struggling with the complexity of my experimental design... I apologize in advance for any incorrect terminology or grammar. I know that I have a 2x2x2 factorial design with 2 different dam diets (during pregnancy), 2 different offspring diets, and genders (obviously 2 levels)...
  4. S

    2x3 factorial design

    Hi, I need to analyse a 2x3 factorial design of an experimental group and a control group, doing 3 serial recall tests over time. so far I've used 2x2 anova to compare serial recall 1 and 2, 2 and 3 etc. there is a main effect of test for some, small effect of condition between subjects in some...
  5. D

    Definition of replications vs treatments (factorial design question)

    I see on wikipedia replication is "the repetition of the set of all the treatment combinations to be compared in an experiment. Each of the repetitions is called a replicate" but I think of each combination of factor levels as different treatments, how are these different? If there is a 2^2...