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Samenvatting SV LESSEN GAO -> 18/20!

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samenvatting & notities van de slides -> uitgebreid!

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Uploaded on
February 10, 2025
Number of pages
16
Written in
2022/2023
Type
Summary

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lOMoARcPSD|6101076




Samenvatting examen


Gevorderde Analysetechnieken en Onderzoekssoftware
(Universiteit Gent)

, lOMoARcPSD|6101076




Studocu wordt niet gesponsord of ondersteund door een hogeschool of universiteit

, lOMoARcPSD|6101076




MEETNIVEAUS

NOMINAAL

• Iets benoemen in categorie
• Geen verschil tss categorieën
• Bv provincies, geslacht, bloedgroepen, politieke partij…

ORDINAAL

• Wel verschil tss categorieën
• Bv eens, neutraal, oneens

METRISCHE: INTERVAL EN RATIO (WAARDE TUSSEN)

• Interval: 0 wel waarde
-bv temp, IQ, ph-waarde
• Ratio: 0 staat voor afwezigheid waarde
-bv inkomen in euro’s, jaren in leeftijd…

LES 1: PROBABILITEIT EN INFERENTIËLE STATISTIEK

STEEKPROEVENVERDELING

• Kansvariabele, stochastische variabele
• Zuivere schatter: gemiddelde
• P = steekproefpercentage, π = populatiepercentage
• Steekproef stijgt, variatie daalt
• Spreiding meten via standaardafwijking (se)
• Zuivere schatter: lage variabiliteit, lage vertekening

Populatieverdeling = verdeling populatie
Steekproevenverdeling = gedrag onbeperkt aantal trekkingen

X met streepje (steekproefgem) en p (steekproef%) zijn zuivere schatters voor
μ (populatiegem) en π (populatie%)

Fractie: X/N = p

X met streepje bepaald door:
-steekproefomvang, steekproefontwerp en populatieverdeling

CENTRALE LIMIETSTELLING

• CLS
• Hoe groter N, hoe normaler verdeeld
• Normaal verdeeld vanaf N = 30




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