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Samenvatting GZW1026 een beknopte visuele weergave van de leerstof

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2020/2021 Written for academic year
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Maastricht University (UM)
Course
GZW1026 Introductie Statistische Methoden (GZW1026)
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Dit is een samenvatting een gaat in op alle elementen van het blok GZW1026.

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Statistics
Introduction
Periode 6 GZW1026

, • Level of measurement
• Variabel
Week 1 • Measure of central tendancy

Assigm • Measures of spread
• Boxplot

ent 1 • Distribution
• Z- score
• Histogram and barchart

,Level of measurement




Kwalitatief (categorisch) = Nominaal en Ordinaal
Kwantitatief (numeriek) = Interval en Ratio

, Mean:
Measur gemiddelde
• Berekening: alle
e of waarde bij elkaar
central Median: hetaantal
opgeteld/ het
waarde
tendanc middelste getal
Mode: het meest
y voorkomende
getal

, Variabel
Continuous
Discrete variabelen
variabelen
• Dit zijn waarden die • Ook waarden die
je kan tellen tussen hele getall
• Alleen hele getalen liggen
als uitkomst
• Voorbeelden: 0 =
niet en 1 = wel ,
jaartallen en

,Measures of
spread
• Sample variance: Hoe ver de
value gemiddeld van het
mediaan af is.
• senstive to outliners
• Laag getal = lage variatie
•
• Range
• Max value – Min value
• IQR
• Q3-Q1

,Boxplot

,Distribution
• Normal distribution
• Mean = Mode = Median
voorbeeld: gewicht
• Left skewed (negative)
• Mean < Median < Mode
voorbeeld: sterfte
• Right skewed (positive)
• Mode < Median < Mean
voorbeeld: inkomen

,

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Subjects

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