Comments on: Rogue Statisticians http://www.overheardinprovidence.com/2008/02/11/rogue-statisticians/ A blog by EERac Sat, 07 Jan 2012 06:46:19 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: EERac http://www.overheardinprovidence.com/2008/02/11/rogue-statisticians/comment-page-1/#comment-190 EERac Thu, 14 Feb 2008 23:42:38 +0000 http://www.overheardinprovidence.com/2008/02/11/rogue-statisticians/#comment-190 Drew, that's a good point. I only used a quadratic because that's what the professors used, but the choice clearly biases the curve to divide a pitcher's career into "two phases". Looking at the actual data, and the image you posted, a higher degree polynomial is probably more appropriate. Unfortunately, to get the three phase behavior you've suggested, a polynomial of at least degree six is required. I just tried this, but it didn't reveal much. It was basically overfitting the data. Drew, that’s a good point. I only used a quadratic because that’s what the professors used, but the choice clearly biases the curve to divide a pitcher’s career into “two phases”. Looking at the actual data, and the image you posted, a higher degree polynomial is probably more appropriate. Unfortunately, to get the three phase behavior you’ve suggested, a polynomial of at least degree six is required. I just tried this, but it didn’t reveal much. It was basically overfitting the data.

]]> By: Drew http://www.overheardinprovidence.com/2008/02/11/rogue-statisticians/comment-page-1/#comment-189 Drew Thu, 14 Feb 2008 18:23:22 +0000 http://www.overheardinprovidence.com/2008/02/11/rogue-statisticians/#comment-189 Sorry, the quadratic doesn't cut it in the era.  WHIP is obviously the same. At least three phases, which shoots down the theory that statistics support a simple drug use pattern. http://img197.imagevenue.com/img.php?image=12578_clemens_era_122_527lo.jpg Sorry, the quadratic doesn’t cut it in the era.  WHIP is obviously the same. At least three phases, which shoots down the theory that statistics support a simple drug use pattern.

http://img197.imagevenue.com/img.php?image=12578_clemens_era_122_527lo.jpg

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