Stat calculated incorrectly

Kemp · 05-10-2002, 08:12 AM

I believe the formula for On Base Average is:
(Hits + Walks + HBP) / (AB + BB + HBP + SF)

Is that correct? If so, OOTP is calculating this incorrectly. As far as I can tell, OOTP is including SF in the numerator as well.

Steve Kuffrey · 05-10-2002, 08:20 AM

<a href="http://mlb.mlb.com/NASApp/mlb/mlb/baseball_basics/mlb_basics_stats_101.jsp" target="_blank">MLB.com defines it.</a>

Kemp · 05-10-2002, 09:17 AM

I thought so. If that's the case, then OOTP is calculating OBP incorrectly.

Kemp · 05-10-2002, 01:18 PM

I'm really hoping that this will be corrected. I'm also surprised that no one has caught this before.

Specs · 05-10-2002, 02:49 PM

People have caught it. Make a player, type in "1" for his batting average. He will hit about .950 for the year and have an OBP of about .600

Kemp · 05-11-2002, 07:50 AM

I think you may have missed my point.

If you go to a particular player page and look at his batting stats, the On Base Percentage figure is calculated incorrectly.

Sacrafice flies are being included in the numerator and it should not be.

OBP is arguably the most important offensive statistic and I'm very surprised it's wrong.

dasperp · 05-11-2002, 08:25 AM

In the career numbers it is calculated correctly though.

Specs · 05-11-2002, 08:34 AM

<blockquote>quote:<hr />Originally posted by Kemp:
I think you may have missed my point.

If you go to a particular player page and look at his batting stats, the On Base Percentage figure is calculated incorrectly.

Sacrafice flies are being included in the numerator and it should not be.

OBP is arguably the most important offensive statistic and I'm very surprised it's wrong.<hr /></blockquote>I got your point, I was just showing you the test you use to prove that it's wrong.

mtw · 05-11-2002, 09:08 PM

<blockquote>quote:<hr />Originally posted by dasperp:
In the career numbers it is calculated correctly though.<hr /></blockquote>Not exactly. Because HBP and SF are not tracked for a career, they are not included in the career OBP calc.

Jason Moyer · 05-11-2002, 09:36 PM

The career OBP is just (H+BB)/(H+BB+AB).

In most cases this will throw off the career OBP calculations by about .001 at most.

Jason

JML · 09-13-2002, 01:58 PM

I just found a pitcher who has identical AVG and OBP this season. He's 11-49 (.224 avg) with no walks, HBP, or SF. His OBP is listed as .224 as well (in both general stats and career), although he has 53 PA.

Scott Vibert · 09-13-2002, 10:59 PM

Except that OBP doesn't use PA.

It uses: (Hits + Walks + HBP) / (AB + BB + HBP + SF)

So if the batter has no walks, HBP, or SF then his OBP will be the same as his batting average.

Sac Hits do not count in the OBP calculation.

Draft Dodger · 09-14-2002, 01:40 PM

math is hard

bigphesta · 09-15-2002, 12:20 AM

fuzzy math is harder

Markus Heinsohn · 09-15-2002, 06:51 AM

Hmmm... looks like the stat is indeed calculated incorrectly. It will be fixed in the next patch.

Jason Moyer · 09-16-2002, 05:08 AM

Does this mean there will be career SF/HBP in the next patch?

Edit: Woops, I guess you're referring to the seasonal OBP calculations. Still, just another note that OBP for the career page is also incorrect.

Jason

05-10-2002, 08:12 AM	#1
Kemp All Star Starter Join Date: Feb 2002 Posts: 1,181	Stat calculated incorrectly I believe the formula for On Base Average is: (Hits + Walks + HBP) / (AB + BB + HBP + SF) Is that correct? If so, OOTP is calculating this incorrectly. As far as I can tell, OOTP is including SF in the numerator as well.

05-10-2002, 08:20 AM	#2
Steve Kuffrey Administrator Join Date: Jul 1999 Location: S.E. TN - Georgia born and raised Posts: 17,035	<a href="http://mlb.mlb.com/NASApp/mlb/mlb/baseball_basics/mlb_basics_stats_101.jsp" target="_blank">MLB.com defines it.</a> __________________ Steve Kuffrey DABS Atlanta Braves - 2008 Eastern Division Champ *DBLC Atlanta Braves - 2011, 2014 East Division Champ, 2012, 2013 NL Wildcard Baseball Maelstrom-Montreal Expos-2013 Tourney winner, 2014 WC Team Sparky's League - Tampa Bay D'Rays Epicenter Baseball League - Astros 2014 The CBL Rewind - Phillies '95

05-11-2002, 09:08 PM	#9
mtw All Star Reserve Join Date: Dec 2001 Posts: 653	</font><blockquote><font size="1" face="Verdana, Arial">quote:</font><hr /><font size="2" face="Verdana, Arial">Originally posted by dasperp: <strong>In the career numbers it is calculated correctly though.</strong></font><hr /></blockquote><font size="2" face="Verdana, Arial">Not exactly. Because HBP and SF are not tracked for a career, they are not included in the career OBP calc. __________________ Over-Zealous Apologist

05-11-2002, 09:36 PM	#10
Jason Moyer Hall Of Famer Join Date: Feb 2002 Location: Pittsburgh Posts: 5,106	The career OBP is just (H+BB)/(H+BB+AB). In most cases this will throw off the career OBP calculations by about .001 at most. Jason __________________ "I pretty much popped everything cold turkey. We were doing steroids they wouldn't give to horses." -- Tom House "I was very fortunate to have a pitching coach by the name of Tom House...Tom, I really miss those days that we spent in the weight room and out on the field working together." -- Nolan Ryan's HoF Induction Speech

09-14-2002, 01:40 PM	#13
Draft Dodger Hall Of Famer Join Date: Dec 2001 Location: formerly of the OTBL Posts: 4,113	math is hard __________________ Draft Dodger (Anarchy: Anything goes. The Draft Dodger viewpoint.) Sophmoric[sic] Member of the OOTP Boards (It's not OOTP; it's your computer) 15 GB Webhosting for $6.95 a month IMO we are best off abandoning that sinking ship that is Off Topic to the rats infesting it and just starting a whole new Baseball Forum from scratch.

05-10-2002, 09:17 AM	#3
Kemp All Star Starter Join Date: Feb 2002 Posts: 1,181	I thought so. If that's the case, then OOTP is calculating OBP incorrectly.

05-10-2002, 01:18 PM	#4
Kemp All Star Starter Join Date: Feb 2002 Posts: 1,181	I'm really hoping that this will be corrected. I'm also surprised that no one has caught this before.

05-11-2002, 07:50 AM	#6
Kemp All Star Starter Join Date: Feb 2002 Posts: 1,181	I think you may have missed my point. If you go to a particular player page and look at his batting stats, the On Base Percentage figure is calculated incorrectly. Sacrafice flies are being included in the numerator and it should not be. OBP is arguably the most important offensive statistic and I'm very surprised it's wrong.

05-11-2002, 08:25 AM	#7
dasperp Minors (Single A) Join Date: Jan 2002 Posts: 61	In the career numbers it is calculated correctly though.

09-13-2002, 01:58 PM	#11
JML Hall Of Famer Join Date: Dec 2001 Location: The act or process of locating. Posts: 2,154	I just found a pitcher who has identical AVG and OBP this season. He's 11-49 (.224 avg) with no walks, HBP, or SF. His OBP is listed as .224 as well (in both general stats and career), although he has 53 PA.

09-13-2002, 10:59 PM	#12
Scott Vibert Hall Of Famer Join Date: Dec 2001 Location: My Computer Posts: 8,249	Except that OBP doesn't use PA. It uses: (Hits + Walks + HBP) / (AB + BB + HBP + SF) So if the batter has no walks, HBP, or SF then his OBP will be the same as his batting average. Sac Hits do not count in the OBP calculation.

09-15-2002, 12:20 AM	#14
bigphesta Banned Join Date: Dec 2001 Location: Des Moines, Iowa Posts: 1,366	fuzzy math is harder

09-15-2002, 06:51 AM	#15
Markus Heinsohn Developer OOTP Join Date: Dec 2001 Location: Germany Posts: 24,803	Hmmm... looks like the stat is indeed calculated incorrectly. It will be fixed in the next patch.

09-16-2002, 05:08 AM	#16
Jason Moyer Hall Of Famer Join Date: Feb 2002 Location: Pittsburgh Posts: 5,106	Does this mean there will be career SF/HBP in the next patch? Edit: Woops, I guess you're referring to the seasonal OBP calculations. Still, just another note that OBP for the career page is also incorrect. Jason __________________ "I pretty much popped everything cold turkey. We were doing steroids they wouldn't give to horses." -- Tom House "I was very fortunate to have a pitching coach by the name of Tom House...Tom, I really miss those days that we spent in the weight room and out on the field working together." -- Nolan Ryan's HoF Induction Speech Last edited by Jason Moyer; 09-16-2002 at 05:40 AM.