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    Regression analysis and F test

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    Please help assist interpreting f-tests and a regression result:

    A) In the first part of the problem I run a joint F test and get the following results:

    . test hlthg hlthf hlthp

    ( 1) hlthg = 0
    ( 2) hlthf = 0
    ( 3) hlthp = 0

    F( 3, 20168) = 50.48
    Prob > F = 0.0000

    How do I interpret these results?

    The next provides me with the results:

    . test hlthg= hlthf= hlthp

    ( 1) hlthg - hlthf = 0
    ( 2) hlthg - hlthp = 0

    F( 2, 20168) = 67.86
    Prob > F = 0.0000
    How would these be interpreted?

    B) I run the regression of medical expenses on age and come up with the following results:

    medical expenses hat = 97.55 -1.8989 age
    (the t stat is -1.10 with 17 df)

    How should I interpret the effect of age? How can I graph the effect using a program like Excel?

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    https://brainmass.com/statistics/regression-analysis/regression-analysis-test-98212

    Solution Summary

    The solution interprets f-tests and regression results.

    $2.19

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