Summary
Samenvatting voor het gebruik van SPSS
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Samenvatting met de belangrijkste theorie omschreven in de praktijklessen over SPSS.
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SPSSDeel 1: Intro
Data: bepalen welke eenheden je gebruikt
Transform: Data veranderen, kenmerken van je eenheden veranderen
Analyze: analyses uitvoeren, beschrijvend & inductief
Graph: grafieken opvragen
Deel 2: Basis
Count
Transform -> count values within cases
Tellen van een specifiek antwoord (resultaat: metrische variabele)
Recode
Transform -> Recode into Different Variables (into same variables niet
gebruiken)
Oude waarden veranderen tot nieuwe waarden
Compute
Transform -> Compute Variable
Bewerkingen op één of meerdere variabelen:
- Schaal veranderen
- Meerdere variabelen combineren tot één variabele
Deel 3 : T-Testen en Anova
T-testen
(analyze -> compare means)
One-Sample T-test : variabele van 1 groep
Independent-Samples T test: verschillende groepen met elkaar gaan
vergelijken
One-Sample T-test:
Mean Difference = Mean – Test Value
T = Mean Difference / Std. Error Mean
Betrouwbaarheidsinterval: rond het verschil steekproefgemiddelde en
nulhypothese
Gewoon betrouwbaarheidinterval: test value = 0
Select cases: selecteer cases, en negeer andere personen
Split file: bij meerdere variabelen
Independent-Samples T-test:
Levene’s Test for Equality of Variances : Test op de gelijkheid van
varianties van beide groepen
- Sig groter dan 0,05, verwerpen nulhypothese niet, bovenste lijn
verder lezen
- Anders, verwerpen nulhypothese verwerpen, onderste lijn
vertrouwen
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