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Samenvatting hypothese toetsen BOS $7.01   Add to cart

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Samenvatting hypothese toetsen BOS

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In deze samenvatting vind je verschillende hypothese toetsende modellen die tijdens het vak Basis onderzoek en statistiek aanbod komen.

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  • February 22, 2022
  • 26
  • 2022/2023
  • Summary
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,Correlationeel – correlatie
Belangrijk in de onderzoeksvragen is samenhang (correlatie).
Voorbeelden:
- Wat is de samenhang tussen zelfwaardering en extraversie?
- Kunnen onderzoekers concluderen dat er een samenhang is tussen agressie en delinquent
gedrag?

Stappen in de NHST = Null hypothesis Significance testing.

Stap 1: toetskeuze, hypotheses bepalen en significantieniveau kiezen.

Toetskeuze:
- Pearson
o Lineaire samenhang
o Interval/ratio meetniveau
- Spearman
o Monotoom stijgend of dalend

Hypothese opstellen:
H(0): p(rho) = 0
H(1): p(rho) < / > / is niet gelijk aan = -

Significantieniveau kiezen: .05 of .01

Stap 2: Assumpties controleren
- Lineaire samenhang tussen predictor en afhankelijke variabele
- Predictoren en afhankelijke variabele minimaal interval meetniveau
- Geen uitschieters
- (multi)collinearity
- Homoscedasticiteit.


Stap 3: Toetsingsgrootheid en p-waarde bepalen
Toetsingsgrootheid is de correlatiecoefficiënt → r


P – waarde



Stap 4: Conclusie trekken over H(0)
We vinden de nulhypothese het meest waarschijnlijk. We verwerpen de h(0) hypothese niet.

Of

We vinden de alternatieve hypothese het meest waarschijnlijk. We verwerpen de nulhypothese, het
resultaat is significant.




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, Stap 5: inhoudelijke conclusie en effectgrootte bepalen.

We vinden h(0) het meest waarschijnlijk. Er is geen significante positieve samenhang tussen
zelfwaardering en extraversie. R = 0.283, n = 10, p = .214, éénzijdig.


Effectgrootte bepaald door correlatiecoëfficiënt




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