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    Re: On LOPs
    From: Trevor Kenchington
    Date: 2002 Apr 19, 12:40 -0300

    Thanks Bill!
    You wrote:
    > I spoke to a statistician at work today who said the error contours
    > were elliptical so long as the error was normally distributed in two
    > dimensions and the two dimensions were at right angles to each other.
    I follow that in the case of two dimensions of error, i.e. two LOPs.
    Indeed, I suspect that the two LOPs would lead to normally-distributed
    errors in two perpendicular  dimensions even if the LOPs were not
    themselves perpendicular. What I am not sure about is whether three or
    more LOPs, each with normally-distributed errors, produce
    normally-distributed errors in each of two dimensions.
    Trevor Kenchington

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