Summary
Samenvatting Statistiek Jaar 2 Bulletin
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Een korte samenvatting van het vak ''Statistiek 1'' gegeven op Avans Hogeschool te Breda.
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Statistiek Samenvatting | Rik BouwelsLes 1
❖ CENTRUMMATEN (in 1x tabel met alle centrummaten en spreidingsmaten krijgen)
Gegevens -> Gegevensanalyse -> beschrijvende statistiek -> samenvattingsinfo
❖ HISTOGRAM
Gegevenstabel -> bereken bereik -> bepaal aantal klassen (zie schema) -> Bereken eindwaarde
iedere klasse en vul in bij ‘’verzamelbereik.’’
- Klassebreedte opstellen (VOORAL LOGISCH NADENKEN):
- W = bereik
- Eerste waarde = minimum + klassebreedte
- Tweede waarde = eindwaarde eerste klasse + klassebreedte
❖ UITBIJTER
Dixon’s Q Grubbs’ G
|𝑠𝑢𝑠𝑝𝑒𝑐𝑡 −𝑛𝑒𝑎𝑟𝑒𝑠𝑡| |𝑠𝑢𝑠𝑝𝑒𝑐𝑡 − 𝑥̅ |
Q= G=
𝑙𝑎𝑟𝑔𝑒𝑠𝑡 −𝑠𝑚𝑎𝑙𝑙𝑒𝑠𝑡 𝑠
Les 2
N = (μ; σ)
❖ Stel N = (40;2) en gevraagd P (x<28), dan:
=((28-40)/2) = -6
NORM.S.VERD (-6, waar) = antwoord * 100% = KANS
❖ Stel N = (165;5) en gevraagd P (x>175), dan:
=((175-165)/5) = 2
NORM.S.VERD (2, waar) = ANS
Antwoord = 1 – ANS = 0,02275 * 100% = 2,28%
❖ Stel N = (93;18) en gevraagd P (110 < x < 115)
Beide Z-waardes zoeken: (115-93)/18 EN (110-93)/18
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