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Samenvatting statistische testen - Farmaceutische data analyse (B-KUL-K0B33A)

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Mag meegenomen worden naar het examen, handig voor het maken van de taak of om de leerstof te herhalen Farmaceutische data analyse Verbeke Geert

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Uploaded on
February 9, 2025
Number of pages
4
Written in
2023/2024
Type
Summary

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Data-analyse: statistische testen
Niet gepaarde t-test
Waarvoor Verschil tussen de gemiddelden van twee onafhankelijke groepen
Hypotheses H0: μ1 = μ2
HA: μ1 ≠ μ2
Assumpties Grote steekproef
- Geen assumpties: CLT

Kleine steekproef
- Normaliteit
- Gelijke varianties
Controle Normaliteit
assumpties - Visueel: histogrammen
- Statistisch: Shapiro-Wilk-test of de Kolmogorov-Smirnov-test

Homoscedasticiteit:
- Visueel: boxplot
- Statistisch Levene's test of F-test
Indien Normaliteit:
assumpties - Niet-parametrische test: Mann-Whitney U-test
niet voldoen
Homoscedasticiteit
- Welch's t-test


Gepaarde t-test
Waarvoor Verschil tussen gemiddelden van 2 afhankelijke groepen
Hypotheses H0: μ1 = μ2 ® H0: μ = 0
HA: μ1 ≠ μ2 ® HA: μ ≠ 0
Assumpties Grote groep:
- geen voorwaarden

Klein groep:
- Normaliteit (in beide groepen) van verschil X
Controle Normaliteit
assumpties - Visueel: histogrammen
- Statistisch: Shapiro-Wilk-test of de Kolmogorov-Smirnov-test
Indien Normaliteit:
assumpties - Originele metingen transformeren en dan verschilscores checken
niet voldoen op normaliteit
- niet-parametrische test: Wilcoxon signed-rank test




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