iSixSigma

Does t-test can be used in no-normal data?

Six Sigma – iSixSigma Forums Old Forums General Does t-test can be used in no-normal data?

Viewing 5 posts - 1 through 5 (of 5 total)
  • Author
    Posts
  • #42276

    Ruddy
    Participant

    As Homogeneity of Varirance( Mintab) can test normal and no-normal data for variance. My question is does t -test can  do it? if not, how we can compare two no-normal data mean value? thanks

    0
    #133412

    DYLJON
    Participant

    I also have a question relating to this.
    Do you perform a normality test on all the samples or on the 2 samples separately?
    Thanks
    Dylan

    0
    #133417

    Dry Hole
    Participant

    Separately

    0
    #133430

    DYLJON
    Participant

    Thanks
     

    0
    #133480

    Ken Feldman
    Participant

    There are a number of non-parametric tests that you can use to test the difference between two non-normal sets of sample data.  In those cases, you are testing the difference in medians, NOT means.  Mann-Whitney test is the nonparametric test equivalent to the 2 sample t test.

    0
Viewing 5 posts - 1 through 5 (of 5 total)

The forum ‘General’ is closed to new topics and replies.