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홍차넷
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Warning: Use of undefined constant r - assumed 'r' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/outlogin_toby.php on line 47
Warning: Use of undefined constant r - assumed 'r' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/outlogin_toby.php on line 51
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Warning: Use of undefined constant no - assumed 'no' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/outlogin_toby.php on line 45
Warning: Use of undefined constant r - assumed 'r' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/outlogin_toby.php on line 47
Warning: Use of undefined constant r - assumed 'r' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/outlogin_toby.php on line 51
Warning: Use of undefined constant memo - assumed 'memo' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/lib.php on line 237
Warning: Use of undefined constant is_admin - assumed 'is_admin' (this will throw an Error in a future version of PHP) in /home/redtea/html/zero_header.php on line 269
Warning: Use of undefined constant level - assumed 'level' (this will throw an Error in a future version of PHP) in /home/redtea/html/zero_header.php on line 300
Warning: Use of undefined constant title - assumed 'title' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/bbs_title.php on line 16
질문
Warning: Use of undefined constant no - assumed 'no' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/bbs_title.php on line 21
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- 질문 게시판입니다.
Warning: Use of undefined constant use_formmail - assumed 'use_formmail' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/lib.php on line 519
Warning: Use of undefined constant use_category - assumed 'use_category' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/include/print_category.php on line 9
전체기타게임진로연애가정/육아체육/스포츠교육의료/건강철학/종교IT/컴퓨터여행과학문화/예술법률홍차넷경제
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Warning: Use of undefined constant name - assumed 'name' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 2
Warning: Use of undefined constant HTTP_HOST - assumed 'HTTP_HOST' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/memo_replace.php on line 3
Warning: Use of undefined constant x - assumed 'x' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 10
Warning: Use of undefined constant use_category - assumed 'use_category' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 40
| Date |
Warning: Use of undefined constant reg_date - assumed 'reg_date' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 53 22/01/10 21:21:18 Warning: Use of undefined constant mod_date - assumed 'mod_date' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 56 |
| Name | 병아리달 |
| Subject | R을 통한 ANOVA 분석에 대해 질문드립니다. |
|
R에 대해 정확히 one-way ANOVA까지밖에 , 그것도 정말 얕게 아는데, 갑자기 ANCOVA라는 기법까지 하게 되었습니다. (원리는 모르지만) A <-aov(A~group, data=asdf) anova(A) 를 하면 그룹 간의 분산이 그룹 사이의 차이 때문에 나온거다... 이 정도는 압니다. ANCOVA라는 방식은 여러 개의 독립 변인과 하나의 종속 변인이 있을 때, 그 중 하나의 독립 변인을 주요 변인으로 삼고, 다른 변인은 통제 변인으로 두는 방식이라고 하더군요. 여기서 two-way ANOVA라는 친구는 두 개의 독립 변인을 모두 주요 변인으로 삼는 경우라고 들었습니다. 그래서 구글링을 많이 해보니 제가 만약 y이라는 변수에 대해서 a, b, c, d 라는 네 가지 변수를 독립 변수로 놓고 a, b, c를 통제 변인으로 둔 뒤 범주병 변수 d에 대해서 d1 d2 d3 세 그룹에 대해 ANCOVA를 돌리고 싶습니다. 이때 x1 = aov(y~d) 를 하고 anova( x1 )를 하면 제가 아는 anova 분석 결과가 나오지요. x2=lm(y~a+d)를 하면 a를 공변수로 두고 anova(x2)를 해서 d에 대한 분산분석을 수행하는 ancova가 나온다고 구글링을 통해 배웠습니다. 그렇다면 x3=lm(y~a+b+c+d)를 하고 anova(x3)를 한 수행한다면 자동으로 d1 d2 d3에 대한 ancova를 수행했다고 볼 수 있는건가요? 총체적으로 R, anova()함수, 분석에 대해 아는게 없다보니 힘드네요ㅠㅠ 내공 백만점입니다. R에 대한 책이나 사이트도 함께 추천해주시면 감사하겠습니다! Warning: Use of undefined constant no - assumed 'no' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 133 Warning: Use of undefined constant no - assumed 'no' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 146 Warning: Use of undefined constant vote - assumed 'vote' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view.php on line 161 0 |
|
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Warning: Use of undefined constant is_admin - assumed 'is_admin' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/lib.php on line 605
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Warning: Use of undefined constant HTTP_HOST - assumed 'HTTP_HOST' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/view.php on line 640
Warning: Use of undefined constant name - assumed 'name' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/view.php on line 644
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Warning: Use of undefined constant HTTP_HOST - assumed 'HTTP_HOST' (this will throw an Error in a future version of PHP) in /home/redtea/html/pb/cmt_replace.php on line 3
Warning: Use of undefined constant ismember - assumed 'ismember' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 6
Warning: Use of undefined constant ismember - assumed 'ismember' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 22
Warning: Use of undefined constant file_name - assumed 'file_name' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 28
Warning: Use of undefined constant no - assumed 'no' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 65
117116 class="iamcmt" style="display:none;"> Warning: Use of undefined constant no - assumed 'no' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 66
117116 class='vcm '>
Warning: Use of undefined constant x - assumed 'x' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 70
Warning: Use of undefined constant x - assumed 'x' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 71
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Warning: Use of undefined constant ismember - assumed 'ismember' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 121
117116'> 소요
Warning: Use of undefined constant mod_date - assumed 'mod_date' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 133
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수정됨
Warning: Use of undefined constant no - assumed 'no' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 140
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Warning: Use of undefined constant reg_date - assumed 'reg_date' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 142
22/01/11 16:42
117116>삭제 주소복사
Warning: Use of undefined constant level - assumed 'level' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 150
음... 연습을 위한 가상의 예제인 것인지, 실제 업무를 위한 것인지 몰라서 말씀드리기 조심스럽네요. 우선은 주요 가정을 확인하는 과정을 따라가 보시는 것이 안전할 거예요.
Anova 기초로는 https://rfriend.tistory.com/m/131 요거 참고해보시면 좋을 듯해요. 기본 원리에 대해서도 알려주네요.
처음에
A <-aov(측정값~요인, data=데이터)
anova(A)
로 보신다 하셨던 건 (저는 주로 summary(A... 더 보기
Anova 기초로는 https://rfriend.tistory.com/m/131 요거 참고해보시면 좋을 듯해요. 기본 원리에 대해서도 알려주네요.
처음에
A <-aov(측정값~요인, data=데이터)
anova(A)
로 보신다 하셨던 건 (저는 주로 summary(A... 더 보기
음... 연습을 위한 가상의 예제인 것인지, 실제 업무를 위한 것인지 몰라서 말씀드리기 조심스럽네요. 우선은 주요 가정을 확인하는 과정을 따라가 보시는 것이 안전할 거예요.
Anova 기초로는 https://rfriend.tistory.com/m/131 요거 참고해보시면 좋을 듯해요. 기본 원리에 대해서도 알려주네요.
처음에
A <-aov(측정값~요인, data=데이터)
anova(A)
로 보신다 하셨던 건 (저는 주로 summary(A)로 봅니다만) 귀무가설 H0 : μ1 = μ2 = ... = μr의 기각으로, 샘플 데이터에서의 집단 간 평균 차이가(일부 간의 차이라도) 모집단 수준에서의 평균 차이가 없다는 영가설을 기각할만한 상당한 근거가 있는지를 살펴본다고 생각하시면 좋을 것 같아요.
Anova 기초로는 https://rfriend.tistory.com/m/131 요거 참고해보시면 좋을 듯해요. 기본 원리에 대해서도 알려주네요.
처음에
A <-aov(측정값~요인, data=데이터)
anova(A)
로 보신다 하셨던 건 (저는 주로 summary(A)로 봅니다만) 귀무가설 H0 : μ1 = μ2 = ... = μr의 기각으로, 샘플 데이터에서의 집단 간 평균 차이가(일부 간의 차이라도) 모집단 수준에서의 평균 차이가 없다는 영가설을 기각할만한 상당한 근거가 있는지를 살펴본다고 생각하시면 좋을 것 같아요.
Warning: Use of undefined constant level - assumed 'level' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 158
Warning: Use of undefined constant password - assumed 'password' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 166
Warning: Use of undefined constant vote - assumed 'vote' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 171
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Warning: Use of undefined constant vote - assumed 'vote' (this will throw an Error in a future version of PHP) in /home/redtea/html/a_skin/bbsd/view_comment.php on line 173
117116>
117116>
