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Samenvatting SPSS sessies stappen per opdracht

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SPSS-sessies per opdracht beschreven welke stapjes je moet doen (in het Nederlands). Ideaal om te leren voor je SPSS-tentamen

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SESSIE 1

► Scale score als som van alle items, met minimaal 22 antwoorden.
o Compute variable  Rnd(MEAN.22(bva01 to bva26)*26)

► Bar chart maken voor gemiddelde scalescore van jongens en meisjes
o Graphs  Legacy dialogs  Bar  ‘mean’ scalescore + gendermean’ scalescore + gender

► Z-score van de scalescore. Bereken de t-waarde van het verschil in
gemiddelde tussen jonges en meisjes.
o Descriptives  ‘mean’ scalescore + gendersave as standardizes values’  scalescore invullen
o Independent samples t-test  gender als grouping (kijk bij goede lijn)

► Kans dat (p-waarde) een kind een score heeft van 20 of lager
o Compute  CDF.Normal  Zscalescore,0,1

► Controleer of de scalescore normaal verdeeld is.
o Explore  normality plots with tests + histogram  ruwe scalescore
o Aflezen Kurtosis, Skewness + delen door standaarddeviatie (-1.96 – 1.96)
o Aflezen Kolmogrov-Smirnov (>0.05 = normaal)

► Percentielscores berekenen. Wat is de percentile rank voor score 20?
o Rank cases  fractional rank as % aanklikken  ruwe scalescore invullen

► Wat is de scalescore bij een percentiel van 85?
o Explore  ruwe scalescore invullen  statistics: percentiles aanklikken
o Paste  85 invullen

► Maar genormaliseerde, afgeronde scores met gemiddelde 20 en
standaarddeviatie 5. Wat is de N-score voor een kind met scalescore 45?
o Rank cases  ruwe scalescore invullen  rank types : normal scores
aanklikken + rankit aanklikken

► Vergelijk de gemiddeldes van de genormaliseerde scores voor de
responsecategorieën van item 1. Wat is de effect size?
o General linear model  univariate  N-score als afhankelijk, item als fixed
factor  options: estimates of effect sizes

► Transformeer de scalescores in 4 groepen (laagste 25%, 25-50%, 50-75%
en hoogste 25%). Bereken de gemiddeldes van item 12 voor de vier groepen.
o Recode into different variables  percentile ranks invullen  waardes ingeven
o Analyse  compare means  means

► Maak een lijngrafiek waarin de gemiddeldes voor item 20 t/m 25 staan voor
de groepen apart.
o Legacy dialogs  line: multiple + summaries for separate variables  other
statistics (mean) 



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