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    Re: A slope example
    From: Antoine Couëtte
    Date: 2010 Dec 1, 02:10 -0800

    Dear Piterr,


    Thanks for your comment. I may or may not have sufficient time to reply to it in much more detail soon.

    If everything you are writing is confirmed, this is a most interesting counter-example to the fact that averages would not lie on the least square regression line. (Up until now, nobody here questioned this assertion).

    I will certainly look into this deeper. Possible (obvious) explanation : a typo from my part. If so, I apologize ... "unreservedly" (see the flick : "A Fish called Wanda")

    More on this later, and certainly it is worth digging deeper. My answer to come will include "everything" I used to do with this kind of calculation on this very samples set:
    - mean values, and
    - observed geocentric slope, (therefore free from refraction, ref. a most recent post from Gary Lapook) and
    - predicted geocentric slope computed from DR + Observer's motion,
    - regression data with position of Mean values (UT, H geocentric) relativeley to linear regression.

    C U soon


    Antoine

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