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ss2?ss3 ????

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Title: 5 Author: Last modified by: Created Date: 1/4/2002 10:00:34 AM Document presentation format – PowerPoint PPT presentation

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Title: ss2?ss3 ????


1
6??????????????
  • ???????(?????)???
  • ss2?ss3 ????

2
???
  • ?????????????
  • ??????????????
  • ?????????
  • ???????

3
??????????
  • ????????????????
  • ????????????????
  • ????????????????????????
  • ?????????????????????????
  • ??????????????
  • ?????????????
  • ?????????....

4
??????????
  • 1?????
  • ????????
  • 2???????
  • ?????????????
  • ???????????????
  • ????????
  • PROC GLM (general linear model)
  • ?PROC ANOVA? ???

WARNING PROC ANOVA has determined that the
number of observations in each cell is not equal.
PROC GLM may be more appropriate.
5
1??????1
6
????
  • B1?B2?????????,B2?B3????????
  • ???,??????1.5

7
?????


8
1??????2
9
????
  • A2?A3????????
  • ???,A2,A3??????????????A1?A2???????????????

10
?????

11
WHY?
  • ????????????????
  • ????????????????????,????????????
  • ??????????????????????,????????
  • ?????OK

12
??????
  • ??????????????,????????????
  • ??????????,???????????????????????????
  • ??????????????????????
  • ???????????

13
?????????SPSS
14
????????? SAS
RYAN-EINOT-GABRIEL-WELSCH ?????? - ?? Y
NOTE ????????? I ???(??)???? ???????.
ALPHA 0.05 df 11 MSE 0.637121
WARNING ???????????????.
?????????? 2.926829
???? 2 3 4
???? 1.706266 1.7820536 1.9857424
????????????????????????.
REGWQ ????? ?? N A

A 5.5000 2 4
A
A 5.4167 6 3
A
B A 3.8000 5 2
B
B 3.5000 2 1
15
???1?????
  • ???????????????,??????????????????
  • ?????
  • ??????????????????????????
  • ????????????????????????
  • ??????????????,???????????????????(??????)

16
2?????
  • ?????????
  • ?????????????????
  • ?????????????????????,?????????
  • ??? ??????????
  • ????????????
  • 1????????

17
??????
  • ?????????
  • ?????????????,?????????????,???????????????
  • ????????(?)
  • ??????????????????????(?????????? )
  • ???????????????(?)
  • ???????????????????????(?????????)
  • model x a b ab/ss2model x a b ab/ss2 ss3

18
????????
  • ?????????????????????????
  • ?????,???????????????????
  • ??????,???????
  • ???????????????
  • ????????????????
  • ????????????????????

19
??????
A
A
Y
AB
Y
B
B
??????? ???????
20
?????
  • ?????????(????,????) x a x a b
  • ????????????(????????) x a b ab x b a
    ab

SA????????
SA???????? SB????????
21
2??????
22
ANOVA???????????
?
23
ANOVA???????????
24
???????(????????????)
1??
2??
ST
ST
SA
SB
SA
SAB
SE
SE
25
?????????(?????????????)
2??
ST
SA
SB
SE
?????????
???????
26
???????????
?
27
???????????(??? II)
10.33
3.56
27.22
SA
SB
SAB
1.78
28
???????????(????)
1.78
28.44
10.33
3.56
27.22
SA
SB
SA
SB
SAB
SAB
1.78
1.78
???? ????
29
????????????
  • Sum of Mean
  • Source DF Squares Square
    F Value Pr gt F
  • Model 3 42.88888889 14.29629630
    5.11 0.0555
  • Error 5 14.00000000 2.80000000
  • Corrected T 8 56.88888889
  • --------------------------------------------------
    -------------------
  • Source DF Type I SS Mean Square
    F Value Pr gt F
  • A 1 13.88888889 13.88888889
    4.96 0.0764
  • B 1 27.22222222 27.22222222
    9.72 0.0263
  • AB 1 1.77777778 1.77777778
    0.63 0.4617
  • --------------------------------------------------
    -------------------
  • Source DF Type II SS Mean Square
    F Value Pr gt F
  • A 1 3.55555556 3.55555556
    1.27 0.3110
  • B 1 27.22222222 27.22222222
    9.72 0.0263
  • AB 1 1.77777778 1.77777778
    0.63 0.4617
  • --------------------------------------------------
    -------------------
  • Source DF Type III SS Mean Square
    F Value Pr gt F
  • A 1 1.77777778 1.77777778
    0.63 0.4617
  • B 1 28.44444444 28.44444444
    10.16 0.0243

30
?????????_???
  • ???????????(???)????
  • ???????????,????????,??????????????????
  • ???????,????????????????????????,????????????????
    ????????

Sum of
Mean Source DF Squares
Square F Value Pr gt F ----------------------
----------------------------------------------- A
1 1.77777778 1.77777778
0.63 0.4617 B 1
28.44444444 28.44444444 10.16
0.0243 AB 1 1.77777778
1.77777778 0.63 0.4617 Error 5
14.00000000 2.80000000 ------------------
--------------------------------------------------
- Corrected T 8 56.88888889
31
???2????????
  • ?????????????????????????
  • ???????????
  • ??????,??????????????????

32
??????
  • ?????????????????
  • ????
  • ???????????????????
  • ??????????????????
  • ????
  • ?????????????????????????
  • ???????????????????
  • SAS,SPSS????????????????
  • ?SAS???????????????????????????

33
recommendation
  • ??,?????????????????
  • ??????????,???????????
  • ???????????????????
  • ????????????????

34
??!?
  • ?????,???????????????????????????????.???????????
    ?????????????,???misleading???????????.???,???????
    ????????????????????????????????.?????????????????
    ??follow-up???????.

35
?????????????????
  • ????????,???????????????????,???(?????????????????
    ??)???????? n ???? ?????????
  • ????SAS,SPSS???????????

36
7?Practical Issue
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