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Samenvatting Kwaliteitszorg: stappenplan Excel Werkcolleges

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Uitgeschreven stappenplan van de werkcolleges Kwaliteitszorg. Sem1, 2de jaar MLT

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Werkcollege 1: Kwantitatieve validatie
1.1. Algemeen
- Goed opdracht lezen
- Checken:
o Gepaarde data, herhaalde meting van zelfde staal
o 2 methoden voor 1 staal
- Significante outliers zoeken met methode van Hampel

1.2. Opdracht 1
Gegevens dupliceren in ander blad
Hampel toepassen
Opgelet: referentiemethode moet links staan!
1. Verschil: nieuw-oud
2. Mediaan bepalen van alle waarden

3. Absolute waarde berekenen van het verschil van alle
waarnemingsresultaten en de mediaan
a. ABS(Med 1 – verschil)

4. Mediaan (mediaan 2) bepalen van deze verschillen
a. Med 2 berekenen uit 3a
b. Med2 * 5.2 = MAD

5. Voor elk verschil (uit punt 2): -→ in kolom van ABS een voorwaardelijke opmaak
toevoegen → zo outlier vinden
a. Kijken of voor elke verschil groter dan MAD van 4b
b. Indien nee = geen outlier
c. Indien ja = outlier = verwijderen uit data maar 1st nog comparison, difference
en regressie doen
Comparison plot maken → Met outlier (in naam vermelden)
- Referentiemethode = x-as Nieuwe methode = y-as Trendlijn + R² + vgl
Difference plot opstellen
- Referentie = x-as
- Verschil nieuw en oud = y-as
Lineaire regressie doen via gegevens analyse
- X = referentie
- Y = nieuw
- R, R², SE = standaardfout (bij gegevens voor regressie), F-waarde (bij variantie
analyse) → aanduiden

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Uploaded on
October 31, 2025
Number of pages
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Written in
2024/2025
Type
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