catagorical data

  1. R

    Linear Mixed Model, a Regression type Statistical Analysis or other?

    I have performed a study on stability where my outcome is continuous and the two inputs are ordinal. Essentially: I am trying to understand if the weight location in a backpack (high, medium, low) and the grade of the road (0%, 5% and 10%) are related to significant differences in stability...
  2. V

    What test to compare bacterial growth in three areas with repeating variables?

    I have a dataset of number of bacterial colonies grown from 11 water samples taken from 3 different watersheds. I want to know if the land area, population, number of waste water treatment plant outfalls, and number of septic tanks in the watershed have any effect on the bacterial growth. The...
  3. amsavage

    AMOS: covariance matrix only input based on ordered catagorical data - possible?

    Hello, I am attempting to use AMOS to run a number of structural equation models. Several of my manifest variables are ordered categorical, a few (intended to be exogenous) are even binary. Unfortunately I only have access to secondary summary data (i.e. a covariance matrix with means and...
  4. B

    Ways to find interaction effects of 2 nominal variables on nominal dependant variable

    Hello I am trying to doing analysis of interaction effects of 1-7 dichotomous or polychotomous dependent variables (nutrition type, either 2 or 3 levels) and one dichotomous variable (young or old age) on dichotomous dependent variable (hyptertension, yes or no). My thought is that as you...
  5. S

    Catagorical analysis

    Hello, I really need help deciding what statistical test to use, as I don't normally work with categorical data! I think I want to see if there is a significant difference between weak, intermediate and strong frequencies for between A and B at each temperature, and also if there is a change in...