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Samenvatting stappenplan enkelvoudige student's T-test SPSS $4.91   Add to cart

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Samenvatting stappenplan enkelvoudige student's T-test SPSS

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Cursus inleiding in de statistiek: stappenplan enkelvoudige student's T-test SPSS Met screenshots van syntax en output

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  • January 16, 2023
  • 4
  • 2020/2021
  • Summary
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ENKELVOUDIGE STUDENT’S T-TEST

• Eén groep
• Continue variabele
• Parametrisch
• Voorwaarden
o continue variabele
o normaalverdeeld met een bepaalde (moet niet gekend zijn) variantie
• voorwaarde NIET voldaan
o alternatief: One-sample Wilcoxon signed ranks test
• Notatie
o steekproefgrootte: n
o steekproefgemiddelde: 𝑥
o steekproefstandaarddeviatie: s
o vooropgesteld gemiddelde (referentiewaarde): 𝜇0
• Kan een verschil aangetoond worden tussen het populatiegemiddelde μ, geschat door 𝑥ҧ
van de bestudeerde populatie, met de referentiewaarde 𝜇0 ➔ werkwijze




o
• Procedure




o
o
▪ M0 = nulwaarde
• Methode:
o Een Enkelvoudige Student’s t-test werd uitgevoerd om na te gaan of de tijd nodig om
de s correct te leren uitspreken verschillend was van 4 maand. Er werd tweezijdig
getest met alpha = 0.05.
• Resultaten:
o Men heeft gemiddeld 1,9 maand (95%BI: 0,62 maand; 3,18 maand) meer nodig dan
de vooropgestelde 4 maand om de s correct te leren uitspreken [t(9)=3,353,
p=0.008].
o T(df)=twaarde, p=pwaarde sig
• Grafisch voorstellen




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