multi-factor model

1. What are the factors that best differentiate the two groups?

Hello Everyone, I am conducting a sports study. I have these data and I would like to answer this question: What are the factors that best differentiate the two groups? I have 2 groups of 17 professional athletes, 17 NBA and 17 MLB players with a total of 64 factors (kinetics and kinematics)...
2. Im terrible at this. Help Please!

Ok so I'm pretty sure this should be simple enough but Im not good at this at all. Basically; 32 participants tested (within design). They all completed 3 tests (subject test, URL test, email test) before training. Then they all completed 3 tests (subject test, URL test, email test) after...
3. Need Complex Ordinal Analysis

My question outlines the need for a non-parametric analysis of ratio data. I have a data set composed of apnea counts for individual mice during different breathing conditions and a drug. This boils down to a three factor ANOVA style data set Factor 1 -> Mouse Strain Factor 2 -> Gas...
4. 2^4 On-farm trial - only 4 plots per farm -> what design possibilities?

Hello, I have to design an on-farm trial with possibly about 600 farmers involved (setting: Madagascar, so rather illiterate participants). There are 4 factors, each at two levels (possibly one at 3 levels but that might get too complicated). Each farmer should have a maximum of four...
5. The multi-factor model is a multivariate gaussian distribution?

I'm sure that the following question is trivial, but I can't found a solid demonstration. Can we state that multi-factor model is a multivariate gaussian distribution? multi-factor model: X_ij = sigma_i * Z_i + sqrt(1-sigma_i^2)* E_ij where i=1,...,k j=1,...,n_i 0 < sigma_i <...