Opleiding: biologie en medisch laboratorium onderzoek. Deze samenvatting is voor statistiek, T toetsen, Z toetsen, variantie, lineaire regressie, chi kwadraat etc.
Statitti ii om: ordt tt icttppt i ctaoi,n data wiiin dig trwtrit ,n dataitti trgtlieit ,n
nitiprait o dtrbonwt ,n oorzaai-gt olg aa to t ,n trba dt aa to t .
Data wordt o dtr trdttld i 4 cattgoritë :
Nomi aal: txclniit t cattgoritë zoali ma / ronw,n ziti/gtzo d.
Ordi aal: gtra gictiit t rtlato tlt cattgoritë zoali itt trbtttrd/ trbtttrd/ittri trbtttrd.
I ttr al: gtra gictiit t.o. . arbitrair nlpn t zoali ttmptratnnr (°C/°F).
Rato: gtra gictiit t.o. . abiolnnt nlpn t zoali lt gtt,n gtwictt,n toogtt.
Normaal trdttldt data in et tottit mtt dt Z-totti,n T-totti of li tairt rtgrtiiit. Cattgorialt data
totti et mtt dt Cti-iwadraat (good tii of ft).
Gtmiddtldt: allt mtttwaardt opttllt : totaal
Mtdiaa : middtlitt waardt a dt dataitt,n data op olgordt a grott zttt middtlitt waardt
ii mtdiaa
Modaal: mttit ooriomt dt waardt nit dt dataitt
Dt iprtidi g in et op trictillt dt ma itrt bt adtrt :
Bie abiolntt iprtidi g gaat ttt om dt ra gt (toogitt waardt – laagitt waardt) a dt dataitt,n
Ali et dt mtdiaa ttbt in et tt boxplot mait ,n
Mtt ttt gtmiddtldt in et dt aria tt t dt ita daarddt iatt btrtit t .
Boxplot ii opgtbonwd nit: laagitt & toogitt waardt,n mtdiaa ,n waardt op 25% & 75% a dt rttii,n
dit trttld tot dt data ro d dt mtdiaa trdttld ii,n iymmttriict/ itt iymmttriict. Bie iymmttrit
mag et ttt gtmiddtldt gtbrniit . Dt boxplot laat zit of tr tt nitbiettr ii,n tt waardt dit tttl trg
afwieit tt opzicttt a dt o trigt waardti.
Popnlatt t itttiprotf
Popnlatt:
- allt waardt nit dt grotp zie btit d,n et ttbt allt i formatt
Stttiprotf:
- ilti aa tal mtt gt
- itt allt waardt a dt popnlatt zie btit d
- tr ia o anwitnrigttid zie omdat et i formatt miit
Popnlatt gtmiddtldt: µ
Stttiprotf gtmiddtldt: x́
Varia tt popnlatt σ 2,n inm of iqnarti (ii) : aa tal mtttpn tt
Varia tt itttiprotf i2,n inm of iqnarti (ii) : aa tal mtttpn tt – 1
Sta daarddt iatt popnlatt σ :
n√
ss
Sta daarddt iatt itttiprotf i:
√ss
n−1
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