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Paired T Test

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  • #49105

    chhabra
    Participant

    hi,
    Is the paired t test always a two-tail test?
    Regards,
    amit

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    #167216

    Amit Jha
    Participant

    Paired T test is sensitive to change in any direction Pre and Post the given condition.  So by this it is a two tailed test.
    However Paired t test is used when you have 1 measurement variable that has two attribute out comes.  So you are comparing two sets of data points.   E.G- time to reach a destination when driving without drinnking and when driving after drinking.

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    #167217

    Ryan
    Member

    Paired t tests can be either two-tailed (nondirectional) or one-tailed (directional). Directional tests should be based on theory and/or previous research supporting this viewpoint.

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