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Samenvatting Stappenplan gepaarde student's T-test SPSS $4.88   Add to cart

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Samenvatting Stappenplan gepaarde student's T-test SPSS

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Cursus inleiding in de statistiek: stappenplan gepaarde student's T-test SPSS

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  • January 16, 2023
  • 3
  • 2020/2021
  • Summary
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GEPAARDE STUDENT’S T-TEST

• Gepaarde vergelijking
• Twee groepen
• Continue variabele
• Parametrisch
• Vergelijking van twee gepaarde groepen data
• Continue variabelen
• Let op: gepaarde gegevens vergelijken ➔ kijken naar verschil tussen gepaarde
waarnemingen
o Is dus één steekproef (van verschillen) ➔ Enkelvoudige Student’s t-test met
gemiddeld verschil onder H0 = 0
• VOORWAARDE
o Verschillen tussen de paren onderling moeten normaalverdeeld zijn
o ➔ Voorwaarde niet voldaan → Gepaarde Wilcoxon
• steekproefgrootte: n
• Gaat gemiddeld verschil tussen de waarnemingsparen na: 𝑑ҧ
• Schatting SD van de verschillen: 𝑠𝑑
• H0: gemiddeld verschil in de populatie = 0
• H1: gemiddeld verschil in de populatie ≠ 0
• Procedure check




o
• Methode:
o Voor de analyse van een continue variabele tussen twee gepaarde groepen werd de
gepaarde Student’t t-test uitgevoerd. Er werd tweezijdig getest bij alpha = 0.05.
• Resultaten:
o De inspanningspolsslag stijgt gemiddeld met 28,0 sl/min (95%BI: 25,9 sl/min; 30,0
sl/min) ten opzichte van de rustpolsslag [t(470)=26,637, p<0,001].
o T(df)=twaarde, p=pwaarde sig
• Grafisch voorstellen
• Tabel beschrijvende numerieke gegevens




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