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Sep 11, 2013
9:03
:46
am
Indy Coug
Why would you expect correlation between the two?
Are you expecting no variability in personal performance?
This message has been modified
Originally posted on Sep 11, 2013 at 9:03:46am
Message modified by Indy Coug on Sep 11, 2013 at 9:04:14am
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Indy Coug
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Indy Coug
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Dec 20, 2001
Last login
Jun 20, 2024
Total posts
185,566 (9,879 FO)
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Messages
Author
Time
ERA is s dumb useless statistic. Anyone here know why?
ChinoCoug
9/11/13 8:55am
ERA is a lot better than many other "traditional" pitching statistics
Indy Coug
9/11/13 8:58am
How is it usefull at all? It doesn't correlate year-to-year at all.
ChinoCoug
9/11/13 8:58am
What do you mean "correlate year-to-year"?
Indy Coug
9/11/13 9:01am
Plot all pitcher's ERA this year vs. next year ERA and there's no correlation.
ChinoCoug
9/11/13 9:03am
Why would you expect correlation between the two?
Indy Coug
9/11/13 9:03am
If ERA were a skill you'd expect a pitcher to have pretty consistent ERA year-to
ChinoCoug
9/11/13 9:04am
ERA isn't a skill. Throwing hard is an ability, throwing accurately is a skill
Indy Coug
9/11/13 9:06am
So it's a composite skill. Then why is it so random?
ChinoCoug
9/11/13 9:12am
Park factors are easily controlled for statistically, yet ERA is still random
ChinoCoug
9/11/13 9:12am
Individual performance isn't random, but it can be highly variable
Indy Coug
9/11/13 9:18am
A pitcher's BB, SO, K, HR, groundball %, flyball % are not random. Whether the
ChinoCoug
9/11/13 9:23am
(For the pitcher, not for the batter)
ChinoCoug
9/11/13 9:23am
Have you plotted that?
Clark Addison
9/11/13 9:28am
Yes, I have seen the correlation numbers.
ChinoCoug
9/11/13 9:32am
I would be interested in seeing them
Clark Addison
9/11/13 9:36am
RE: I would be interested in seeing them
ChinoCoug
9/11/13 9:41am
Guess I should say poor correlation, not no correlation.
ChinoCoug
9/11/13 9:42am
I can't view it at work, so I will have to look at it at home
Clark Addison
9/11/13 9:55am
Hint: the correlation is 0.38. The following statistics have a correlation in
ChinoCoug
9/11/13 10:39am
I've never argued that ERA is the best stat, I have been arguing that it
Clark Addison
9/11/13 11:01am
Why use ERA when you can compute DIPS, FIPS, LIPS, or QuikERA almost as easily?
ChinoCoug
9/11/13 11:46am
Pitching abilities don't correlate year to year, why should pitching metrics?
OpusX
9/11/13 9:46am
i can agree with RBI. I don't understand your problem with ERA.
TheRowdy
9/11/13 9:00am
Pitchers have little control over balls in play. The only thing it can influence
ChinoCoug
9/11/13 9:01am
That's why unearned runs are excluded. If you take out errors and poor
Tim
9/11/13 9:06am
Erros capture only a tiny fraction of a fielder's ability. If you don't go for a
ChinoCoug
9/11/13 10:43am
What is wrong with RBI? Seems like a useful measure to me. After all,
workindev
9/11/13 9:16am
Because it isn't evenly available across all positions in the order.
Tim
9/11/13 9:17am
I disagree with this because baseball people don't expect leadoff hitter to
JOPE
9/11/13 10:41am
What if everybody who bats in front of you sucks?
ChinoCoug
9/11/13 10:41am
I am not saying that A is better than B because A has 110 RBI and B has 104
JOPE
9/11/13 10:49am
Good hitters bat in the middle of the lineup. That's why their RBIs are so high.
ChinoCoug
9/11/13 10:59am
Disagree. ERA still has value. It's wins that are useless.
Tim
9/11/13 9:01am
I like WHIP
cougrfan70
9/11/13 9:02am
I like WHIP, too. No need to limit ourselves. The more meaningful stats, the
Tim
9/11/13 9:03am
I like Nate Silver's QuikERA.
ChinoCoug
9/11/13 9:05am
You would... Democrat..
Solomon Levi
9/11/13 9:23am
ChinoCoug
9/11/13 9:40am
I think ERA is a more useful stat
OpusX
9/11/13 9:39am
I like W's. That is best indicator.
BYUheaven
9/11/13 9:06am
Signed.... Matt Harvey
Solomon Levi
9/11/13 9:23am
ERA, WHIP and BAA are the best pitching stats IMO
JOPE
9/11/13 10:38am
???
Walter Bellhaven
4/24/14 1:05pm
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