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Sunday, March 24, 2013

Is Bill James Right about Ground Ball Pitchers and Injuries? | FanGraphs Baseball

Bill Petti’s initial study says he isn’t.

Jim Furtado Posted: March 24, 2013 at 08:56 AM | 4 comment(s) Login to Bookmark
  Tags: sabermetrics

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   1. PASTE, Now with Extra Pitch and Extra Stamina Posted: March 24, 2013 at 12:55 PM (#4395267)
Oh good, so we can continue arguing about sentence spacing here, right?

One space after a period is the obvious Right Thing and DEATH TO THE INFIDELS.
   2. Astro Logical Sign Stealer Posted: March 24, 2013 at 02:01 PM (#4395299)
I'm no statistician, but it seems to me there's a flaw in comparing 25% of the population to the other 75%, because one group is 3 times bigger.
   3. Tom (and his broom) Posted: March 24, 2013 at 02:40 PM (#4395317)
The bigger flaw is that James was talking about pitchers who were extreme GB pitchers, not the top 25% but the top 2-3%. Pitchers whose gb rates differed from the median by a much more statistically significant amount. And not coincidentally were extremely effective.

   4. GotowarMissAgnes Posted: March 24, 2013 at 03:21 PM (#4395331)
No flaw in comparing different sized groups, as long as you recognize they'll have different levels of variation.

The article looks at the top 10%, T(AHB). Now, maybe you want to argue that it has to be on the top 2-3%, but at that point you are getting down to numbers where it would be close to impossible to prove much of anything.

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