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Math Help - Critical value

  1. #1
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    Critical value

    This is statistics stuff.
    What is the critical value of 90% confidence?

    I know for 95% it is.
    I dont know how you find it.
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  2. #2
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    Quote Originally Posted by Morgan82 View Post
    This is statistics stuff.
    What is the critical value of 90% confidence?

    I know for 95% it is.
    I dont know how you find it.
    Presumably you mean for a particular distribution (normal, t, chi-sq, F, ...)

    Traditionally you look critical values up in a table, or nowerdays use an
    appropriate software tool.

    RonL
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  3. #3
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    Quote Originally Posted by Morgan82 in almost a repeat post (it does have some crucial additional information)
    What is the critical value, or the z value of 90%?

    For example, the z value of 95% = 1.96

    How do you find it?
    The critical z-value for a 90% confidence interval is 1.64. This is easily found in either of the ways mentioned by CaptainB. Or alternatively, by making google your friend.
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