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Samenvatting Module 2 Multivariate Analyse
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Dit is een samenvatting van zowel de slides, het boek als de lessen van de tweede module van het vak multivariate analyse.
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Module 2: Algemeen Lineair ModelMULTIVARIATE
ANALYSE
,Inhoudsopgave
Module 2: Algemeen Lineair Model..................................................................3
Dummyvariabelen, interactietermen & mediatie............................................................3
Dummyvariabelen....................................................................................................... 3
Gewone dummycodering......................................................................................... 3
Effect dummycodering............................................................................................ 5
Interactietermen......................................................................................................... 5
Inleiding................................................................................................................... 5
Aparte regressielijnen voor 2 groepen.....................................................................6
Drie mogelijke interpretaties...................................................................................6
Aanmaken interactietermen....................................................................................7
Mediatie...................................................................................................................... 8
Een eenvoudig bivariaat regressiemodel.................................................................8
Een eenvoudig mediatiemodel................................................................................8
Exogene vs endogene variabelen............................................................................8
Directe, indirecte en totale effecten........................................................................9
Volledige vs partiële mediatie..................................................................................9
Voorwaarden voor mediatie.....................................................................................9
Sobel toets voor indirecte effecten........................................................................10
Omgaan met ontbrekende data....................................................................................11
Inleiding.................................................................................................................... 11
Ontbrekende waarden als probleem......................................................................11
Belangrijke begrippen............................................................................................ 11
Soorten ontbrekende data.....................................................................................11
Unit non-response..................................................................................................... 12
Oorzaak unit-nonresponse.....................................................................................12
Wegen................................................................................................................... 13
Steekproefgewicht................................................................................................. 13
Item non-response.................................................................................................... 13
Complete case analysis......................................................................................... 13
Pairwise deletion.................................................................................................... 14
Mean substitution.................................................................................................. 14
Missing value indicators........................................................................................14
Regressie imputatie............................................................................................... 15
Multipele imputatie................................................................................................ 15
Variantieanalyse........................................................................................................... 16
Enkelvoudige variantieanalyse..................................................................................16
ANOVA: hypothesen............................................................................................... 16
Totale som der kwadraten:....................................................................................16
Determinatie en alientatiecoëfficiënten.................................................................17
ANOVA Toets.......................................................................................................... 17
Variantiehomogeniteit........................................................................................... 18
Paarsgewijze vergelijkingen......................................................................................18
Multipele vergelijkingen......................................................................................... 18
Meervoudige ANOVA.................................................................................................. 19
Orthogonale effecten............................................................................................. 19
Niet-orthogonale effecten......................................................................................20
Types ANOVA............................................................................................................. 21
Partitie Hiërarchische methode..............................................................................21
Regressiebenadering............................................................................................. 21
Uitbreiding van het ANOVA model.............................................................................22
Covariantieanalyse (ANCOVA)...............................................................................22
Multivariate ANOVA............................................................................................... 22
1
, MULTIVARIATE ANALYSE
2
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