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Samenvatting statistiek hoofdstuk 3

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goede samenvatting voor toets of examen

Institution
Module








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Connected book

Written for

Institution
Secondary school
Study
TSO
Module
School year
4

Document information

Summarized whole book?
Yes
Uploaded on
May 4, 2021
Number of pages
3
Written in
2020/2021
Type
Summary

Subjects

Content preview

Statistiek: H3
1. Het gemiddelde




OPGELET:
 Gemiddelde bij Relatieve frequentie: niet meer delen door 100
 Gemiddelde bij procenten: wel nog delen door 100
Voorbeelden:




Extra: zie groene kader: rekenmachine

2. De mediaan en de modus




Het kiezen van een geschikte centrummaat
Belangrijke regel: maak altijd eerst een grafische voorstelling van je gegevens
 Symmetrische verdeling: kan kiezen tussen gemiddelde en mediaan
 Scheve verdeling: mediaan = interessanter


Gemiddelde met rekenmachine:
Stap 1: stat > edit
Stap 2: invullen v/d lijst
Stap 3: stat > calc > 1 VAR-stats > L2 > -x (L2 invullen
via scnd)
Stap 4: druk op calculate

3. De spreiding van een verdeling
1. De variatiebreedte R v/e reeks = verschil tussen grootste en kleinste waarde: R = Max – Min
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