centering variables

  1. L

    Centering level-1 interaction terms in HLM

    Dear all, I’m running multilevel analyses with HLM and wish to examine an interaction between two level 1 predictor variables. Following recommendations in the literature, I group-mean centered both level 1 predictor variables to ease interpretation. However, I’m left clueless as to whether the...
  2. C

    Predictions after mean-centred regression

    Hi, I wonder if anyone can help me with a problem I'm having. I just performed an ordinary (LS) regression in which both the dependent and independent variables were logged (the model is log-linear) and grand-mean-centred. The results look good. However, for my purposes, I need to be able to...
  3. Y

    Use of regression models with centered variables

    Hi all, I'm a little confused about how to use a regression model with centered variables. I know how centering variables works for reducing multicollearity and easier interpretation especially when there are interaction terms. However, after a model was built with centered variables...