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Thu 13 Jun, 2013 08:31 pm
m a medical studnt. my topic is to compare 2 groups of people, who received a particular treatment. i hav used a 3 point likert scale.
3-always, 2-sometimes,1-never. which test i should use to compare the 2 groups...?
@ANNCHRIZ,
Your data is ordinal not interval so it needs a non-parametric test such as Mann Whitney, not the t test.