Search results

  1. M

    dummy variable

    In linear regression, I have a categorical independent variable with 4 values (vrnt=1,2,3,4). I have created 4 dummy values (vrnt1 when vrnt=1 else=0, vrnt2 when vrnt=2 else=0, vrnt3=1 when vrnt=3 else=0, vrnt4=1 when vrnt=4 else=0). Reference is vrnt1. I should run linear regression with vrnt2...
  2. M

    Three proportions

    Which test is use to identify significant group among three group of proportions? By doing individual chi square, z test for proportion or logistic regression using dummy variable?