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Math Help - Required Sample Size

  1. #1
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    Required Sample Size

    If I have a distribution of points, how may samples do I need in order to draw an area that encompasses (say) 90% of the points, to (say) 90% confidence?
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  2. #2
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    Quote Originally Posted by waza862 View Post
    If I have a distribution of points, how may samples do I need in order to draw an area that encompasses (say) 90% of the points, to (say) 90% confidence?
    This is a bit vague, can you be more explicit. What are you really trying to do.

    CB
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  3. #3
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    I am running a monte carlo simulation to predict the accuracy of a footballer's penalty kick. I am specifically after the area in which the ball will end up, in the plane of the goal, 90% of the time. I want to construct a confidence interval, and I am after the sample size required. The problem is I do not know the variance or any other statistical data as yet
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