Quartic function

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Quartic function

 This post has NOT been accepted by the mailing list yet. I'm trying to run a quartic polynomial regression on SPSS, but apparently cubic is the highest order you can find under Regression >> Curve Estimation. Do you have any ideas on how to do this?
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Re: Quartic function

 Administrator Syntax!!!  But if you can't fit a cubic. a quartic is probably a waste of effort.  Plot/Transform/Think.  Or maybe autopilot??? Doh factor overload. --- ma_me wrote I'm trying to run a quartic polynomial regression on SPSS, but apparently cubic is the highest order you can find under Regression >> Curve Estimation. Do you have any ideas on how to do this? Please reply to the list and not to my personal email. Those desiring my consulting or training services please feel free to email me. --- "Nolite dare sanctum canibus neque mittatis margaritas vestras ante porcos ne forte conculcent eas pedibus suis." Cum es damnatorum possederunt porcos iens ut salire off sanguinum cliff in abyssum?"
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Re: Quartic function

 You could calculate the polynomials and run an ordinary regression, but they are likely to be ill behaved.  You might consider cubic splines, which can be constructed with the STATS SPLINES extension command.On Sun, Dec 25, 2016 at 2:22 PM David Marso <[hidden email]> wrote:Syntax!!!  But if you can't fit a cubic. a quartic is probably a waste ofeffort.  Plot/Transform/Think.  Or maybe autopilot??? Doh factor overload.---ma_me wrote> I'm trying to run a quartic polynomial regression on SPSS, but apparently> cubic is the highest order you can find under Regression >> Curve> Estimation. Do you have any ideas on how to do this?-----Please reply to the list and not to my personal email.Those desiring my consulting or training services please feel free to email me.---"Nolite dare sanctum canibus neque mittatis margaritas vestras ante porcos ne forte conculcent eas pedibus suis."Cum es damnatorum possederunt porcos iens ut salire off sanguinum cliff in abyssum?"--View this message in context: http://spssx-discussion.1045642.n5.nabble.com/Quartic-function-tp5733636p5733637.htmlSent from the SPSSX Discussion mailing list archive at Nabble.com.=====================To manage your subscription to SPSSX-L, send a message to[hidden email] (not to SPSSX-L), with no body text except thecommand. To leave the list, send the commandSIGNOFF SPSSX-LFor a list of commands to manage subscriptions, send the commandINFO REFCARD ===================== To manage your subscription to SPSSX-L, send a message to [hidden email] (not to SPSSX-L), with no body text except the command. To leave the list, send the command SIGNOFF SPSSX-L For a list of commands to manage subscriptions, send the command INFO REFCARD