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Samenvatting Statistiek hoorcollege 13
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aantekeningen van hoorcollege 13
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Statistiek HC13Samenhangmaten
Samehangmaten = sterkte van het verband uitgedrukt in een (handig) getal
Waar moet je rekening mee houden?
- Meetniveaus van de variabelen
o Nominaal
o Ordinaal
o Interval
- Onderscheid tussen symmetrische en asymmetrische samenhangmaten
o Symmetrisch -> geen onderscheid tussen afhankelijke en
onafhankelijke variabele
o Asymmetrisch -> van te voren aangegeven wat onafhankelijke en wat
de afhankelijke variabele is
Tussen nominale Tussen ordinale Tussen interval variabelen
variabelen variabelen
Epsilon ε (2x2) asym Gamma γ Paerson’s correlatie r
Phi φ (2x2) Tau τ
Cramérs V Spearman’s Rho ρ
ε coëfficiënt
Wanneer is er asymmetrische samenhang?
De kans om in categorie Y = 1 te komen hangt af van X
Zodra Lucia aanwezig is, wordt de kans dat er een incident is, verhoogd met 18%
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