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What statistical test do i use - mann whitney?

  1. Jan 11, 2012 #1
    What statistical test do i use - mann whitney??

    1. The problem statement, all variables and given/known data

    "In a study, a sample of physical and developmental problems was randomly divided into two groups: treatment group and control group. The question of interest is whether the average change of PDI score from 6 to 24 months was different for children in the intervention programme to those in the control programme. The observations do not follow a normal distribution"

    3. The attempt at a solution

    Do i use a man whitney test here??? baring in mind that its two independent groups but yet the differences are from two value which are not independent???

    thanks
     
  2. jcsd
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