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Samenvatting SPSS blok 4 - CE1

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Uploaded on
October 18, 2016
Number of pages
2
Written in
2015/2016
Type
Summary

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Vragen: P4 – SPSS
- Gesloten
- Open (numeriek)
- Open (tekst)
- Multiple response

4 schalen:
- Nominaal verschillende antwoordopties
- Ordinaal rangorde
- Interval een optie is x keer meer dan andere optie
(geen sprake van natuurlijk nulpunt)
- Ratio wel een natuurlijk nulpunt leeftijd, salaris, gewicht

Date = datums / tijdstippen
String = teksten

Normale verdeling:
- Centrale tendentie
o Gemiddelde
o Modus (hoogste frequentie)
o Mediaan (middelste)
- Spreiding
o Gemiddelde afwijking = som van de afstanden tot het gemiddelde / aantal scores
o Variantie = som van de gekwadrateerde afstanden tot het gemiddelde / aantal scores
o Standaarddeviatie = wortel van variantie
- Verdeling

Grafieken
- Cirkeldiagram alles tot 100% / nominaal of ordinaal / 2 – 8 antwoordcategorieën
- Staafdiagram losse antwoordcategorieën / nominaal of ordinaal
- Histogram continue variabelen / interval of ratio (ook bij open vragen, scale)
- Kruistabel nominaal of ordinaal / Chi – kwadraat
- Klassenindeling ratio / veel uitkomsten = dit makkelijker dan frequentie – of kruistabel
- Boxplot (vaak) bij ratio geschaalde variabelen
Sterretje = extremen (fase nummer uit bestand vermelden)
Rondje = uitschieters (1,5 keer van interkwartielafstand af)

Interval / ratio = staafdiagram (met gemiddelden)
boxplot (voor groepen) of vergelijken
gemiddelden via MEANS (?)
Nominaal / ordinaal = kruistabel
geclusterde staafdiagram
rependiagram (?)

Samenhang: De sterkte van de samenhang tussen 2 variabelen in een kruistabel (Cramér’s V)
V=0 GEEN SAMENHANG
V = 0,10 Zwakke samenhang
V = 0,25 Redelijk sterke samenhang
V = 0,50 Sterke samenhang
V = 0,75 Zeer sterke samenhang
V=1 Volledige samenhang

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