June 2024
Beginner to intermediate
352 pages
9h 29m
Korean
Content preview from 개발자를 위한 필수 수학
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63
2
장
확률
( AND ) () ()
1
()
2
1
(6)
6
11 1
( AND 6) 0.08333
2 6 12
PA B PA PB
P
P
P
= ×
=
=
=×= =
앞면
앞면
쉽네요. 그런데 왜 이렇게 될까요? 가능한 모든 사건의 조합을 생성함으로써 많은 확률 규칙을
발견할 수 있습니다. 이는 순열과 조합으로 알려진 이산 수학 영역에서 유래되었습니다. 동전
의 앞면 (
H
)과 뒷면 (
T
)을 주사위 숫자
1
부터
6
까지와 짝을 지어 가능한 모든 결과를 생성해보
죠. 관심 대상인 앞면과
6
이 나오는 결과에 별표 (
*
)로 표시했습니다.
H1 H2 H3 H4 H5 *H6* T1 T2 T3 T4 T5 T6
동전을 던지고 주사위를 굴리면 위와 같이
12
가지 결과가 나옵니다. 우리의 관심 대상은 앞면
과
6
이 나오는 ‘
H6
’뿐입니다. 따라서 가능한 결과
12
가지 중 조건을 만족하는 결과는 하나뿐이
므로 앞면과
6
이 함께 나올 확률은
1
/
12
입니다.
가능한 모든 조합을 생성하고 관심 있는 조합을 헤아리는 대신, 곱셈을 사용하면 결합 확률을
빠르게 구할 수 있습니다. 이를
곱셈 정리
product
rule
라고 합니다.
1
( AND ) () ()
11 1
( AND 6) 0.08333
2 6 12
PA B PA PB
P
= ×
=×= =
앞면
2.2.2
합 확률
두 개 이상의 사건이 동시에 발생할 확률인 결합 확률에 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.