May 2021
Beginner to intermediate
380 pages
9h 22m
Korean
Content preview from 데이터 과학을 위한 통계(2판)
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202
데이터 과학을 위한 통계
용어 정리
•
표준화잔차
standardized
residual
: 잔차를 표준오차로 나눈 값
•
특잇값
outlier
: 나머지 데이터(혹은 예측값)와 멀리 떨어진 레코드(혹은 출력값 )
•
영향값
influential
value
: 있을 때와 없을 때 회귀방정식이 큰 차이를 보이는 값 혹은 레코드
•
지렛대 (레버리지 )
leverage
: 회귀식에 한 레코드가 미치는 영향력의 정도 (유의어 : 햇 값
hat
-
value
)
•
비정규 잔차
non
-
normal
residual
: 정규분포를 따르지 않는 잔차는 회귀분석의 요건을 무효로 만들 수 있다.
데이터 과학에서는 별로 중요하게 다루지 않는다.
•
이분산성
heteroskedasticity
: 어떤 범위 내 출력값의 잔차가 매우 놓은 분산을 보이는 경향(어떤 예측변수를
회귀식이 놓치고 있다는 것을 의미할 수 있다)
•
편잔차그림
partial
residual
plot
: 결과변수와 특정 예측변수 사이의 관계를 진단하는 그림(유의어 : 추가변수
그림
added
variable
plot
)
4.6.1
특잇값
일반적으로
특잇값
이라고 부르는 극단값은 대부분의 측정치에서 멀리 벗어난 값을 의미한다.
위치와 변이를 추정할 때 이미 살펴본 것처럼 (
1
.
3
절과
1
.
4
절 참고 ), 회귀모형에서도 ...
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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.