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Math Help - Finding value of z-score.

  1. #1
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    Finding value of z-score.

    How do I find the corresponding value to a certain z-score? Besides using the table of value.

    I was assuming that if z>0 then I need to compute:
    \frac{1}{ \sqrt{\pi} } \int_0^z e^{-x^2} dx
    But that does not work when I numerically integrate that.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by ThePerfectHacker View Post
    How do I find the corresponding value to a certain z-score? Besides using the table of value.

    I was assuming that if z>0 then I need to compute:
    \frac{1}{ \sqrt{\pi} } \int_0^z e^{-x^2} dx
    But that does not work when I numerically integrate that.
    \frac{1}{ \sqrt{2 \pi} } \int_0^z e^{-x^2/2} dx

    RonL
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