T-Test for Independent

  • T-Test for Independent




    Data Entry
    Sample A Sample B
    Please be sure to perform
    the Data Check procedure.
    Data Summary
      A B Total
    -
    -X2 
    SS 
    mean 
    ResultsQ
    MeanaMeanb t df
     P  one-tailed
    two-tailed

    For independent samples, these results pertain to the "usual" t-test,
    which assumes that the two samples have equal variances.

    F-Test for the Significance of the Difference
    between the Variances of the Two SamplesQ

    df1 df2 F P
    t-Test Assuming Unequal Sample Variances
    [Applicable only to independent samples.]Q

    MeanaMeanb t df
     P  one-tailed
    two-tailed

    Observed
    Confidence Intervals
    0.95
    0.99
    Meana

    ±
    ±
    Meanb

    ±
    ±
    Meana−Meanb
    [Assuming equal
    sample variances.]


    ±
    ±
    Meana−Meanb
    [Assuming unequal
    sample variances.]


    ±
    ±


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