May 2022
Beginner to intermediate
667 pages
16h 17m
Korean
Content preview from R Cookbook
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R
296
9장 일반 통계
values
라고 불리며, 집단 분류 요인이 있는 열은
ind
라고 불린다.
pairwise.t.test
를
사용하면 집단들 간의 쌍별 비교를 수행할 수 있다.
pairwise.t.test(comb$values, comb$ind)
#>
#> Pairwise comparisons using t-tests with pooled SD
#>
#> data: comb$values and comb$ind
#>
#> fresh soph
#> soph 0.001 -
#> jrs 3e-04 0.592
#>
#> P value adjustment method: holm
p
-값으로 된 테이블을 보자.
3
학년 대
1
학년을 비교한 것과
2
학년 대
1
학년을 비교한
것은 각각
0
.
001
과
0
.
0003
으로 작은
p
-값이 나왔다. 따라서 우리는 이 집단들 사이에
큰 차이가 있다고 결론 내릴 수 있다. 하지만
2
학년 대
3
학년의 비교에서는 (상대적
으로) 큰
p
-값인
0
.
592
가 나왔으므로, 그들 사이에는 유의미한 차이가 없다.
레시피
5
.
5
와
9
.
15
를 참고하라.
9.20
두 개의 표본이 동일한 분포에서 온 것인지가 궁금하다.
골모고로프-스미르노프(
Kolmogorov
-
Smirnov
) 검정은 두 개의 표본을 비교해서 같
은 분포에서 ...
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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.