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Idential trend line equations show different trends

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  1. 07-26-2006, 05:03 AM #1
    Wired PSF
    Wired PSF is offline
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    Idential trend line equations show different trends

    Hi

    I have plotted a trend line based on some actual known data. I have then manually calculated the y figure by plugging in the trend line formula.

    y = 5E-05x4 - 0.0283x3 + 5.4408x2 - 521.05x + 29719

    On that attachment you can see a difference in results even though its the same trend line.

    Any ideas?

    Thanks

    Wired
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