実用

Name Picker

Random Name Picker

Enter names (one per line)

How many to pick

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とは何か Name Picker?

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A random name picker selects one or more names at random from a list — useful for prize draws, assigning tasks, picking teams, or choosing a winner fairly.

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公式

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f(x)Random selection algorithm: each name probability = 1/n (uniform); weighted if importance varies

変数の説明

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記号	名前	単位	説明
n	Number of names in list	—	—
P	Probability of selection	1/n	—

方法 Name Picker

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1Uniform random selection: each name has equal probability
2Without replacement: once picked, removed from pool
3With replacement: same name can be picked again
4Fisher-Yates shuffle ensures unbiased randomness

解いた例

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例 1

入力:Pick 1 winner from 50 names

結果:Each name has exactly 1/50 = 2% chance of being selected

実際の応用

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Raffle and lottery drawing

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Student selection for presentations

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Team formation in sports

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Random assignment in experiments

Probability of Being Picked

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List size	Chance of being selected
5 names	20%
10 names	10%
25 names	4%
50 names	2%
100 names	1%

よくある質問

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How is random name selection done fairly?

Each name gets equal probability (1/n) using pseudo-random number generator. True randomness is algorithmic.

Can weighted selection be used?

Yes. If some names are more likely, adjust probabilities. Raffle: ticket quantity = probability weight.

Is a name picker better than drawing names?

Both fair if unbiased. Digital: audit trail, repeatable. Physical draw: perceived fairness, transparent process.

参考文献

›Random selection — Wikipedia

Mathematically verified

Reviewed October 2026

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