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Math Help - Regression chart analysis, analyzing confidence intervals

  1. #1
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    Regression chart analysis, analyzing confidence intervals

    I am having trouble interpreting this chart.
    see attatchment
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  2. #2
    MHF Contributor matheagle's Avatar
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    It's a standard anova table, where you have 3 parameters, besides the constant term. What don't you understand?

    Gender is a wothless variable here and starting salary can be either kept of tossed.
    The CI for the MEAN or expected salary (instead of a prediction interval for the 41 male) starts
    with the point estimator.

    So plug in the x's into your equation.

    y=27946.57894 + 1665.251558 (5) + 0.266374185 (30 or 30,000 I guess) + -3285.541043 (0 for males, go figure)

    then the st dev is not easy at all.

    I use matrices, because you will need the covariances between the variables, the estimate of s is \sqrt{mse}
    and the degrees of freedom for the t is 39.
    Last edited by matheagle; March 15th 2009 at 07:55 PM.
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