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Samenvatting Statistiek hoorcollege 7

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aantekeningen van hoorcollege 7

Institution
Tilburg University (UVT)
Course
Statistiek








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Institution
Tilburg University (UVT)
Study
Psychologie
Course
Statistiek
All documents for this subject (16)

Document information

Uploaded on
May 30, 2017
Number of pages
5
Written in
2016/2017
Type
Summary

Subjects

  • statistiek
  • hoorcollege

Content preview

Statistiek HC7
Verschillen tussen rokende mannen en vrouwen mbt hun drang naar nicotine
Vier prangende vragen van de onderzoeker
- Is er een verschil in heterogeniteit tussen vrouwen in vergelijking met mannen op
populatieniveau? -> Levene’s test (SPSS) of F-test (HC8)
- Is er een gemiddeld verschil in de populatie? -> t-toets
- Hoe groot is het verschil?-> betrouwbaarheidsinterval
- Is het verschil relevant (groot)? -> Cohen’s effect size
Groepsverschillen op populatieniveau
- Scenario 1 -> zelfde grafiek
µ man = µ vrouw
σ man = σ vrouw
- Scenario 2 -> vrouwen ligt meer naar rechts
µ man < µ vrouw
σ man = σ vrouw
- Scenario 3 -> vrouwen is smaller en hoger
µ man = µ vrouw
σ man > σ vrouw
- Scenario 4 -> vrouwen ligt meer naar rechts + smaller en hoger
µ man < µ vrouw
σ man > σ vrouw
Kleine σ -> homogene populatie -> veel hetzelfde
Grote σ -> heterogene populatie -> verschillend
De toets voor populatiegemiddeldes (µ) is anders als σ man en σ vrouw verschillen voor
beide groepen dan als σ man en σ vrouw hetzelfde zijn
Je toetst daarom eerst op heterogeniteit
- H0 : σ man = σ vrouw
- H1 : σ man is niet σ vrouw
Daarna toetsen we op populatiegemiddeldes
- H0 : µ man = µ vrouw
- H1 : µ man is niet µ vrouw
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Hallo allemaal, ik ben Hanneke en ik studeer psychologie aan Tilburg University. Ik ben een groot fan van samenvattingen maken en deze deel ik graag met jullie. Alvast veel succes met leren!!

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