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Samenvatting Analyse 1 + tentamenhulp| Radboud Universiteit

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Met deze samenvatting heb ik een 9,7 gehaald voor Analyse 1. De samenvatting is afgestemd op alles wat je moet kennen voor het tentamen. Inclusief extra ondersteuning: Bij aankoop krijg je toegang tot een groepsapp waarin je al je vragen over de stof aan mij kunt stellen. Stuur me eenvoudig een bericht via mijn profiel en ik voeg je toe. Wat je ontvangt: Een compacte samenvatting met alle essentiële tentamenstof voor Analyse 1 en SPSS Deze samenvatting is ideaal als je snel de kern wilt begrijpen én graag persoonlijke hulp krijgt in aanloop naar het tentamen.

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Analyse 1
6-9-2024
Grasple theorie (geen SPSS)




Wouters, E.W.H. (Esmée)
STUDENT RADBOUD 1151334

,Inhoudsopgave
1: Variabelen en frequentieverdelingen....................................................................................................................4
Variabelen..............................................................................................................................................................4
Variabelen..........................................................................................................................................................4
Meetniveaus......................................................................................................................................................4
Frequentietabellen................................................................................................................................................5
Frequentietabellen............................................................................................................................................5
2: Centrummaten en spreidingsmaten.....................................................................................................................7
Centrummaten......................................................................................................................................................7
Modus................................................................................................................................................................7
Mediaan.............................................................................................................................................................8
Gemiddelde.......................................................................................................................................................9
Spreidingsmaten..................................................................................................................................................11
Bereik/Range...................................................................................................................................................11
Interkwartielafstand........................................................................................................................................11
Variantie en Standaarddeviatie.......................................................................................................................14
Steekproefcorrectie.........................................................................................................................................16
3: Scoretransformaties en visualisaties...................................................................................................................18
Scoretransformaties............................................................................................................................................18
Scoretransformaties........................................................................................................................................18
Z-scores............................................................................................................................................................19
Visualisaties.........................................................................................................................................................21
Visualisaties voor categorische variabelen......................................................................................................21
Visualisaties voor variabelen met interval en ratio meetniveau.....................................................................22
4: Correlatie.............................................................................................................................................................24
Relaties................................................................................................................................................................24
Kruisproductensom en covariantie.....................................................................................................................25
Pearson’s correlatiecoëfficiënt............................................................................................................................27
Causaliteit........................................................................................................................................................28
Spearman’s rho = rangcorrelatie.........................................................................................................................30
5: Enkelvoudige regressieanalyse............................................................................................................................31
Enkelvoudige regressieanalyse: Regressievergelijking........................................................................................31
Enkelvoudige regressieanalyse: Berekenen regressiecoëfficiënten en proportie verklaarde variantie..............32
6: Meervoudige regressieanalyse............................................................................................................................35
Meervoudige regressieanalyse: Regressievergelijking........................................................................................35
Meervoudige regressieanalyse: Berekenen regressiecoëfficiënten en proportie verklaarde variantie.............37
Meervoudige regressieanalyse: moderatie en mediatie.....................................................................................39
Moderatie: nog een derde variabele...............................................................................................................39
Mediatie: wordt verklaard door/komt door....................................................................................................40


1

,7: Samenhang bij categorische variabelen..............................................................................................................42
Kruistabellen........................................................................................................................................................42
Samenhang berekenen: Chi-kwadraat................................................................................................................43
Samenhang berekenen: Cramer’s V en Phi.........................................................................................................45
Cramer’s V.......................................................................................................................................................45
Phi (ϕ)..............................................................................................................................................................45
8: Kansen en kansverdelingen.................................................................................................................................47
Basis kansrekening...............................................................................................................................................47
Rekenen met kansen...........................................................................................................................................48
Somregel..........................................................................................................................................................48
Voorwaardelijke kans......................................................................................................................................49
productregel....................................................................................................................................................49
Statistische (on)afhankelijkheid......................................................................................................................50
Kansverdelingen..................................................................................................................................................50
9: (Standaard)normale verdeling............................................................................................................................53
Normale verdeling...............................................................................................................................................53
Waarde naar kans................................................................................................................................................54
Kans naar waarde................................................................................................................................................56
10: Steekproevenverdeling......................................................................................................................................57
Steekproevenverdeling voor het gemiddelde.....................................................................................................57
Steekproevenvariantie....................................................................................................................................58
De steekproeven voor het gemiddelde...........................................................................................................58
Centrum van de steekproevenverdeling.........................................................................................................58
Spreiding van de steekproevenverdeling voor het gemiddelde......................................................................58
Vorm van de steekproevenverdeling voor het gemiddelde............................................................................58
Drie verschillende verdelingen............................................................................................................................59
Populatieverdeling...........................................................................................................................................59
verdeling van scores in de steekproef.............................................................................................................59
De steekproevenverdeling voor het gemiddelde............................................................................................60
De standaardfout.................................................................................................................................................60
Steekproevenverdeling voor het gemiddelde.................................................................................................60
De standaardfout.............................................................................................................................................60
Interval voor verwachte waarden van het steekproefgemiddelde.....................................................................62
De steekproevenverdeling voor het gemiddelde ...........................................................................................62
Kritieke waarden voor Z...................................................................................................................................63
Het interval voor verwachte waarden van het steekproefgemiddelde..........................................................63
Interpretatie interval voor verwachte waarden .............................................................................................64
11: Betrouwbaarheidsinterval en z-toets voor 1 gemiddelde................................................................................65
Het betrouwbaarheidsinterval -oud....................................................................................................................65
Schatten...........................................................................................................................................................65
Kritieke z-waarden...........................................................................................................................................65

2

, Interpretatie....................................................................................................................................................65
Betrouwbaarheidsinterval en voorspellingsinterval.......................................................................................66
Het principe van toetsen: het opstellen van hypothesen...................................................................................67
Het principe van toetsen: een besluit nemen over de nulhypothese.................................................................68
Foutenkans......................................................................................................................................................68
Beslissingen nemen over de nulhypothese.....................................................................................................69
Beslissen over H0 met toetsingsgrootheid z en kritieke z-waarden................................................................69
Beslissen over H0 met overschrijdingskans p..................................................................................................69
Statistisch significant resultaat........................................................................................................................70
Kritieke waarden voor het steekproefgemiddelde..........................................................................................70
Besluiten over de nulhypothese met het betrouwbaarheidsinterval VOOR μ...............................................71
Effectgrootte Cohen’s d.......................................................................................................................................73
Cohen’s D.........................................................................................................................................................73
12: Eenzijdig toetsen; Fouten en onderscheidingsvermogen.................................................................................75
Eenzijdig toetsen.................................................................................................................................................75
Twee soorten fouten en onderscheidingsvermogen...........................................................................................76




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