HC 3 Flashcards

1
Q

links-scheef

A

gemiddelde < mediaan < modus

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2
Q

rechts-scheef

A

gemiddelde > mediaan > modus

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3
Q

symmetrisch

A

gemiddelde = mediaan = modus

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4
Q

relatieve locatie

A

percentielscore of z-score

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5
Q

percentielscore

A

percentielen van 10% maken, score is het percentage wat dezelfde of lagere waarde scoort (OIR)

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6
Q

z-score

A

z = (x - gem.) / s

regel van chebyshev toepassen (IR)

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7
Q

negatieve z-score

A

ligt onder gemiddelde, gebruik positieve z-score in z-tabel

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8
Q

uitschieters

A

outlier, inner fence

Q3 + 1,5 IQR of Q1 - 1,5 IQR

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9
Q

verre uitschieters

A

extreme cases, outer fence

Q3 + 3 IQR of Q1 - 3 IQR

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10
Q

z-score vuistregels

A

|z| > 1,96 is mogelijk outlier
|z| > 2,58 is waarschijnlijk outlier
|z| > 3,29 is extreme case

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11
Q

bivariate analyse

A

niet mogelijk bij nominale afhankelijke variabele
als afhankelijke en onafhankelijke variabele interval of ratio zijn > spreidingsdiagram of lijndiagram
anders > boxplot

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12
Q

numerieke weergave

A

frequentietabel en centrum- en spreidingsmaten (die horen bij het meetniveau van variabele)

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