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| 통계학:이항분포 [2025/09/24 10:38] – masteraccount | 통계학:이항분포 [2025/09/24 13:24] (current) – [공식사용예문] masteraccount | ||
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| ====정의==== | ====정의==== | ||
| 독립적인 [[통계학: | 독립적인 [[통계학: | ||
| + | 쉽게 말하면 : n번 시험해서 특정사건 x번 발생할확률\\ | ||
| \\ | \\ | ||
| ====공식==== | ====공식==== | ||
| Line 42: | Line 43: | ||
| \\ | \\ | ||
| 4. 계산 : \\ | 4. 계산 : \\ | ||
| - | $ p(2, 3, 0.5) = \binom{3}{2} p^x (1-0.5)^{3-2} $ 가된다.\\ | + | $ p(2, 3, 0.5) = \binom{3}{2} p^2 (1-0.5)^{3-2} $ 가된다.\\ |
| \\ | \\ | ||
| $\binom{3}{2} = \frac{3!}{2!(3-2)!} = 3$ \\ | $\binom{3}{2} = \frac{3!}{2!(3-2)!} = 3$ \\ | ||