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Hoe de hoofd- en interactie-effecten aflezen van een tabel of grafiek?

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Indien het in de les niet zo duidelijk was hoe je hoofdeffecten en interactie-effecten uit grafieken of tabellen afleest, kan dit document altijd van pas komen. Erin staat uitgelegd hoe je hoofdeffecten van de X of Y variabele afleest en hoe je bepaald dat er wel of geen interactie-effect aanwezig is. Naast dit vak is het document ook handig voor statistiek

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Hoofdeffecten en interacties
Allereerst moet je de marginale gemiddelden berekenen (Rode vierkanten)




Hoofdeffect:

OP GRAFIEK
Wel hoofdeffect Geen hoofdeffect
De gemiddelde zijn verschillend De gemiddelde zijn gelijk

Hoofdeffect X-as Hoofdeffect Y-as
1. Neem de bollekes boven X1 1. Neem 1ste lijn en bepaal
en bepaal gemiddelde (Y1) gemiddelde (Y1) = midden
2. Neem de bollekes boven X2 lijnstuk
en bepaal gemiddelde (Y2) 2. Neem 2de lijn en bepaal het
3. Y1 ≠ Y2  HOOFDEFFECT gemiddelde (Y2) = midden
voor factor B lijnstuk
3. Y1 ≠ Y2  HOOFDEFFECT
voor factor A (LET OP: Y1 =
Y2  GEEN hoofdeffect)




IN TABEL
Wel hoofdeffect Geen hoofdeffect
Marginale gemiddelde zijn Marginale gemiddelde zijn gelijk
verschillend

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Uploaded on
March 2, 2025
Number of pages
3
Written in
2024/2025
Type
Class notes
Professor(s)
Eva van den bussche
Contains
College 7

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