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sample size calculator – proportions

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This topic contains 6 replies, has 4 voices, and was last updated by  Darth 9 years, 9 months ago.

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  • #53034

    lin
    Participant

    Someone sent me a macro for sample size calculations (proportions) and the input fields include alpha, beta, P0  (> than P0 but less than P1), P1 (value must be > 0 but less than P0).
    Could someone please tell me what P0 and P1 represent?  Thanks!

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    #187551

    Darth
    Participant

    Possibly has to do with estimated proportions.

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    #187553

    Darth
    Participant

    Possibly it refers to the proportions.

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    #187563

    Mikel
    Member

    Maybe it’s just me, but I would ask the person who gave me the
    macro.

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    #188534

    Jorge N. rodriguez
    Participant

    Po and P1 are risks factors. They are used in the medical field. Look up a biostat book for power sample size of proportions. I am surprised that Darth and Stan had no clue.

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    #188535

    lin
    Participant

    Hello Jorge,
    You know not what you just did. Let the fireworks begin.

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    #188536

    Darth
    Participant

    Wrong. As I said they are the alternate proportions given some suspected population proportion and some desired degree of precision. We are talking about sample size of a proportion and your answer makes no sense.

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