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WikiCards · Card list · Science cards · Banzhaf power index
Common card · Science
Banzhaf power index, a Common card
The Banzhaf power index, named after John Banzhaf, is a power index defined by the probability of changing an outcome of a vote where voting rights are not necessarily equally divided among the voters or shareholders.
- Rarity
- Common
- Domain
- Science
- ATK
- 58
- DEF
- 25
- Power
- 83
- Wikipedia reads a year
- 6,600
Power 83 (ATK + DEF): stronger than 25 % of WikiCards cards.
Banzhaf power index quiz: 3 questions
Three questions on the Banzhaf power index card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
A voter's power is measured as the ______ of all swing votes that they could cast.
Answer
fraction. A voter's power is measured as the fraction of all swing votes that they could cast. From the Banzhaf power index article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Pierre Méchain. Pierre Méchain 62 · Banzhaf power index 58 · Joseph Pitton de Tournefort 54 · Zune 80, 120 51 ATK in WikiCards.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- To calculate the power of a voter using the Banzhaf index, list all the winning coalitions, then count the critical voters.
- A critical voter is a voter who, if changing their vote from yes to no, would cause the measure to fail.
- A voter's power is measured as the fraction of all swing votes that they could cast.
Why it is Common
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Banzhaf power index article was read about 6,600 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 58 and blocks with 25: each hit it takes is cut by 10 %.
How to get Banzhaf power index
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Banzhaf power index in the power ranking, all domains together.
- Yoshinori OnoCommon · Science · ATK 50 DEF 33
- Maxime Du CampCommon · Arts · ATK 53 DEF 30
- Robe of StateCommon · History · ATK 52 DEF 31
- BraubachCommon · Society · ATK 44 DEF 39
- Heidelberg, Western CapeCommon · Society · ATK 49 DEF 34
- Hillcrest High SchoolCommon · Society · ATK 53 DEF 30
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Banzhaf power index (revision), CC BY-SA 4.0. Photo : The original uploader was Pleasantville at English Wikipedia ., CC BY-SA 3.0, Wikimedia Commons.
