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Math Help - Anova table question

  1. #1
    Newbie
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    Feb 2009
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    6

    Exclamation Anova table question

    Please if anyone can help with this question for my beginners Statistics class...

    Explain how using the ANOVA table reduces the probability of cumulative type 1 error that would otherwise occur if you ran mulitple t tests instead.

    TIA
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  2. #2
    Junior Member
    Joined
    Mar 2009
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    34
    The F test tests that all coefficients are significant at the 95% say significance level. If a t test is run on one of the coefficients at the 95% level of confidence then if another t test of significance is run at the 95% level we now can no longer say that we are 95% confident and we are less and less confident each time we run another t-test. Running a single F test for all coefficients will test if the model is adequate without losing any confidence.
    Hope this helps
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