BPA - Revision history

Olin Bose at 17:07, 25 April 2026

2026-04-25T17:07:54Z

Kevin Wang at 19:18, 17 January 2025

2025-01-17T19:18:02Z

Kevin Wang at 02:55, 12 January 2025

2025-01-12T02:55:25Z

Kevin Wang: Created page with "'''BPA''' ('''buzz point area-under-the-curve''') is an advanced stat devised by Ryan Rosenberg[https://hsquizbowl.org/forums/viewtopic.php?t=21962 I..."

2025-01-12T02:48:59Z

Created page with "<onlyinclude>'''BPA''' ('''buzz point area-under-the-curve''') is an advanced stat devised by Ryan Rosenberg<ref>[https://hsquizbowl.org/forums/viewtopic.php?t=21962 I..."

New page

<onlyinclude>'''BPA''' ('''buzz point area-under-the-curve''') is an [[advanced stat]] devised by [[Ryan Rosenberg]]<ref>[https://hsquizbowl.org/forums/viewtopic.php?t=21962 Introducing BPA, a new evaluation metric using detailed stats] by [[ryanrosenberg]] » Wed Oct 17, 2018 12:52 pm</ref>. It uses [[buzzpoint]] information to weight a player's performance based on how early they convert questions, allowing players with similar [[PPG]] or [[power]] counts to be distinguished.</onlyinclude>

==Calculation==
As stated in the original post, BPA is calculated as "total area under the curve of <nowiki>[% of tossups gotten successfully]</nowiki> against <nowiki>[% of question elapsed]</nowiki>". In practice this involves calculating cumulative conversion percent at each fractional buzz point of the question being read and then summing all hundred values between 0% and 100%.

Though originally meant to describe individual players across an entire tournament, it can straightforwardly extended to teams ('''total BPA''') over shorter scales like a single game. There are publicly available versions of the code available in R<ref>[https://hsquizbowl.org/forums/viewtopic.php?p=369746#p369746 Re: Introducing BPA, a new evaluation metric using detailed stats] by [[Jasconius]] » Sun Apr 12, 2020 6:12 pm</ref>, Power Query for Excel,<ref>[https://hsquizbowl.org/forums/viewtopic.php?p=369919#p369919 Re: Introducing BPA, a new evaluation metric using detailed stats] by [[Alejandro]] » Tue Apr 14, 2020 11:15 pm</ref> and as a Jupyter notebook.<ref>[https://hsquizbowl.org/forums/viewtopic.php?p=369920#p369920 Re: Introducing BPA, a new evaluation metric using detailed stats] by [[Smuttynose Island]] » Tue Apr 14, 2020 11:39 pm</ref>.

==References==
<references/>

{{c|Statistics}}
{{c|Quizbowl lingo}}

← Older revision		Revision as of 17:07, 25 April 2026
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	A typical BPA for a lead scorer is 5-10; within a specific category [[specialist]]s will typically be 10-20.		A typical BPA for a lead scorer is 5-10; within a specific category [[specialist]]s will typically be 10-20.
		+
		+	BPAs for [[2026 ACF Nationals]] were assembled by [[Vivian Malouf]] and can be seen [https://docs.google.com/spreadsheets/d/1stBYLQ-NOBuaGOkvss7YPHtqhfG4Q1X2aGaEdJ6Ug1Y/edit?gid=0#gid=0 here].

	==Calculation==		==Calculation==

← Older revision		Revision as of 19:18, 17 January 2025
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	A player who converts zero questions over a [[20/20 format\|standard format]] tournament with 10 rounds will have a BPA of 0, while a player who converts 100 questions in the same scenario will have a BPA between 0.5 (if all questions were converted at the end) and 50 (if all of them were gotten in zero seconds).		A player who converts zero questions over a [[20/20 format\|standard format]] tournament with 10 rounds will have a BPA of 0, while a player who converts 100 questions in the same scenario will have a BPA between 0.5 (if all questions were converted at the end) and 50 (if all of them were gotten in zero seconds).
		+
		+	A typical BPA for a lead scorer is 5-10; within a specific category [[specialist]]s will typically be 10-20.

	==Calculation==		==Calculation==

← Older revision		Revision as of 02:55, 12 January 2025
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−	<onlyinclude>'''BPA''' ('''buzz point area-under-the-curve''') is an [[advanced stat]] devised by [[Ryan Rosenberg]]<ref>[https://hsquizbowl.org/forums/viewtopic.php?t=21962 Introducing BPA, a new evaluation metric using detailed stats] by [[ryanrosenberg]] » Wed Oct 17, 2018 12:52 pm</ref>. It uses [[buzzpoint]] information to weight a player's performance based on how early they convert questions, allowing players with similar [[PPG]] or [[power]] counts to be distinguished.</onlyinclude>	+	<onlyinclude>'''BPA''' ('''buzz point area-under-the-curve''') is an [[advanced stat]] devised by [[Ryan Rosenberg]]<ref>[https://hsquizbowl.org/forums/viewtopic.php?t=21962 Introducing BPA, a new evaluation metric using detailed stats] by [[ryanrosenberg]] » Wed Oct 17, 2018 12:52 pm</ref>. It uses [[buzzpoint]] information to weight a player's performance based on how early they convert questions, allowing players with similar [[PPG]] or [[power]] counts to be distinguished. A player's BPA represents how many total words were not read due to the speed of their buzzes.</onlyinclude>
		+
		+	A player who converts zero questions over a [[20/20 format\|standard format]] tournament with 10 rounds will have a BPA of 0, while a player who converts 100 questions in the same scenario will have a BPA between 0.5 (if all questions were converted at the end) and 50 (if all of them were gotten in zero seconds).

	==Calculation==		==Calculation==