???? ?? ?????? ???? ????? Chi-square for goodness of fit (?2) - PowerPoint PPT Presentation

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Title:

???? ?? ?????? ???? ????? Chi-square for goodness of fit (?2)

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Title: Chi-square for goodness of fit ( 2) Author: rico Last modified by: Ricardo Created Date: 2/11/2005 12:29:32 PM – PowerPoint PPT presentation

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Tags: chi | fit | goodness | square

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Transcript and Presenter's Notes

Title: ???? ?? ?????? ???? ????? Chi-square for goodness of fit (?2)


1
???? ?? ?????? ???? ?????Chi-square for goodness
of fit (?2)
2
??????? ???? ?????? ?????? ????? ??? ????/????
???? ?? ?? ?????????? ??? ?????? ?"?????" ??? p
??????? ??????? q.
??? ?? ???? ???? ????? ????? ?? ?????????
?? ????? ????? ??? ???? ????, ??? ????? ????? ???
?????? ??????
???? ?? ?????????? ?? ?????? ????? ???? - ???
?-p ?? ???? ????? ??? ?-q.
2
?????
??? ????? ?? ?????? Ainsworth ?????? 3 ????
??????? (attachment style) ????, ???? ????.
?????? ??????????? ?? ????? ?????? ??? ????
?????????? ?? ????55 ???? 25 ??? 20 ????
??? 40 ??????. ????? ???????? ?????? ????
?????????? ????? ????? ?????
????? ?????? ??????
20 25 55
0.240 0.2540 0.5540
8 10 22
???? - expected
3
?????, ???? ????? ??? ???? ????? ?? ???? ??????
????? (??? ??-10 ????? ???? ?? ???? ????? ?-5
????? ??), ??? ???? ?????? ???? ?????. ??????,
?????? ????
????? ?????? ??????
10 14 16
???? - observed
?????? ????? ????? ??? ?????? ???? ?????? ???????
??????.
????? ?????? ??????
8 10 22 ????
10 14 16 ????
2 4 -6 ???
4
?? ??????? ????? ?? ???? ????? ??? ??? ????
??????, ??? ???? ?? ?????? ??????
????? ?????? ??????
8 10 22 exp (fexp)
10 14 16 obs (fobs)
2 4 -6 (obs-exp)
4 16 36 (obs-exp)2
??? ????? ?? 6, ??? ????? ????? ?????, ???? ???
???? ??????? ????. ?????? ?? ???? ????? ??? 550
?????? 556,????? ?????? ?????? ??? ???. ?"?
?????? ?????? ??, ???? ????? ?? ???? ???????
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5
???????? ?? ?????? ???????, ?????? H0, ?????.
???? ?? i
???? ???? ??????? ???? ????? (???? ????????), ??
???????? ???? ???? ????, ???? ???? ??????? ??
????? ?????, ????? ?? ?? ?????? ???? ?????????
???? 1 (?????? ?? ?? ??? 40 ?????? ????? ??????,
?????? ??????? 22, ?????? ?????? 10
????????....?????? ????? 8), ?????? ?"?2.
  • ?????? ?? ?2
  • ????? ?????.
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  • ??? ???? ?-20 ?????? ??? ??????? ?????? ????
    ?-5.
  • ??????? ?????? ??? ?? ???????.

??? ?????? ??-??????, ???? ??? ???? ?-2 ??????.
6
(No Transcript)
7
?????
??? ????? ?? ?????? Ainsworth ?????? 3 ????
??????? ????, ???? ????. ?????? ??????????? ??
????? ?????? ??? ???? ?????????? ?? ????55,
???? 25, ??? 20. ???? ??? ????? 40 ????????
????? ???????????. ??? ???? ???? ???? ????? ??
95 ?????????? ??????????? ?? ???? ???? ??????
???? ??? ?? ??? ?????????? ?? ????? 16 ??????, 14
?????? ?-10 ??????
????? ?????? ??????
10 14 16 ???? Obs
0.2408 0.254010 0.554022 ????Exp

???? ?? i

??? ?? ??? ???? ??? ?-5.
EXCEL
(pgt.05)
????
?2(2)3.74, p.15 ??? ?? ???? ????? ?? H0. ????
????? ?? 95, ???????? ??????????? ???? ?????
???? ?????????? ?????? ???????? ????.
p value
?2 ?????
????? ??-????? (????? ??-EXCEL ???? ?? ?????)
8
?? ???? ???? ?????? ?-?2
?? ?????? ???? ????? ?? ???? ???? ??? ??? ????
????? ?????? ??????? ?? ??????.
?? ???? ?? ?"?1 ???? ???? ????? ??-????? (??
?????? ??-?????? ?????? ?????). ???? ??? ?? ????
?? ??? ?p- ?-2 (?? ?????? ?? ???? ?????? ???? 2?
?????? ?? np?5 ?????? ?????? ????? ?-20 ??????
???? ???? ?????? ????? ???? ?-5.
??? ??????? ???? ????? ???????, ?? ???-??????
???? ????? ??? (??? ????? ?? ??? ???? ??? ??
(df1.
Yates continuity correction
9
?????
?????? ?? ?????? ?? ????? ?????? ???? ??????????
)????p( 0.4. ????? ???? ??????? ???? ?????
??????. ???? 15 ??????? ??? 12. ??? ???? ????
???? ????? ?? 95 ????? ?????? ????? ???????
??? ?2
??? ??????
?????? ?????
3 12 ???? Obs
0.6159 0.4156 ????Exp
3.36 5.04
np150.46gt5
??? ???? ???? ????? ???????.

??? ?? ??? ???? ??? ?-5.
????? ?? ???? ??? ??????
CHIDIST(8.4,1)/20.0019lt0.05
1-NORMSDIST(2.9)0.0019lt0.05
?????? ??-?????
??? ???? ????? ?? 95 ???? ????? ?? H0...
???? ????? ?? 95 ???? ????? ?? H0...
10
????? ????? ?? ?????? ????? ?? ??? ????????
(???? ????? ?? ??????????). ?? ???? ????? ??????
??? ???, ??????? ???? ???? (?? ?????? ????? ???).
11
???? ?? ?????? ??? ????Chi-square for
independence (?2)
???? ????? ????? ??? ????? ???? ???????? ??? 2
??????, ??? ????? ????? ??? (?? ???? ???? ???? ??
??? "???" ?????) .?????? ??????? ??? ???? ???
??????? ??? ??? ??????.
???? ??? ????
?????? ????? ?-2 ?????? ?? ???? ?????? ??
p(A)p(A/B) ?? ????? ????
???? ?? i,j.
??? ???????? ?????? (?????)
????? ????????? ??? ??? ??????? ?????? ?????
????? ?????? ??? ????? ????? ??????????? ?????
???? ??? ????????
12
???? ???? ??? ?? ?? ?????? ??????? ????? ??-????
(??? ?????? ????????), ????? ??? ????? ?? ???
?????? ?????? ????? ??????? ???????).
?????? A ?-B ?"? ??
??
13
?????? ???????
????? ???????? ???????
????? ????????? ??????
?????? ????????? ?????? ????? ?? ????
????? ????????? ?????? ?-n ?????? ?????? ???????.
14
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?????? ????? ??? ?????? ?????? ???????, ?????
?????? ??? ????? ????? ??????????? ????? ???? ???
???????, ???? ??? ?? ??????.
???? ????? ????? ????? ???? ?????? ???? 1 (R-1)
???? ???? ??????? ???? 1 (C-1).
????? ????? ?????? ??????? ??? ?? ????
?????? ????
frow
fcolumn
fexp(A1?B2)0.30.7100
p(A1)
p(B2)
15
?????
???? ??? ????? ??? ???? ??? ??? ??? ??????. ??
???? ?????? ???? ????? ?? 95?
?? ????? ???? ??? ??? ??????H0
???? ?? i
??
????? ???? ??? ??? ??????H1
???? ??! ???? ???? ?????? ??????? ??????? ????
???? ??"?, ??? ?????? ?????? ?????? ??? ?????????
???????.

??? ?? ??? ???? ??? ?-5.
df(2-1)(2-1)1
CHIDIST(0.28,1)0.60
???? ????? ?? 95 ?? ???? ????? ?? H0 ????? ?????
??? ??? ??? ??????.
16
?? ??? ?????? ???-???? ?? ???? ????? ??????? ????
?"?1.
???? ?"?1 ???? ???? ????? ?? ?????. ?????? ???
????? ?????? ???? ?????.
  • ???? ????? ??? ????? ???????? ?-EXCEL
  • ?????? ????? ?? ????? ????? ?????? ?? ?????
    ??????.
  • ???? ?? ?????? ???? ????? ???? ?????.
  • ???? ?? ?????? ??? ???? ????? ??? ??????.
  • ??????? ?????? (????? ??????,????? ?????CHITEST(
  • ??????? ?? ??? ?-p.
  • ?? ????? ???? ?? ??? ?-?2 ???? CHIINV(p value,
    df)

???? EXCEL ?? ???? ????? ??????? (???? ?"?1).
17
(No Transcript)
18
?????
???? ??????? ???? ??? ???? ??? (????) ??? ???
???????? ???? ???. ?????? ????? ??? ???? ????
???? ???????? ??? ????? ?????. ??? ?? ??? ??? 170
?????? ????
?? ???? ?????? ???? ????? ?? 95?
????? ????? ?????, ?? ???? ??? ???????.
(?? ???? ??? ??? ??? ???????? ????)
???? ?? i
??? ?? ?? ??? felt5 (?????? ???? ?? 20 ??????).

?????
??? ?? ???? ????? ?? H0. ???? ????? ?? 95 ??
???? ??? ???...
?? ????? ????? ??? ?????
??? ?? ???? ????? ?? H0.
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