equation query

  1. O

    Writing equations for latent growth curve models

    Hi all, I'm a PhD student currently working on an independent research project using latent growth curve modeling. This is my first time using this statistic, and I was wondering if anyone had a good reference that discusses how to form the statistical (i.e., mathematical) equations. I like...
  2. N

    Least Squares method relating to an equation

    I have been given 5 sets of data each at different temperatures measuring stress vs time in each set. The question is:1) Using the data above, estimate using the least squares technique, the following relationship between the tests conditions and time to failure. to.5j =...
  3. L

    Logistic regression, interactions

    I am having a nightmare and unfortunately my supervisors cannot figure this out either! I have an equation from logistic regression, of which the equation includes an interaction variable (2 variables combined). I need to produce a worked example, we can’t find out what happens to the...