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Ondersteunde statistische variabelen en de toetsen die u moet indrukken
om ze op te vragen staan hieronder. Voor enkel-variabele statistische
berekeningen, zijn de variabelen met een asterisk (*) beschikbaar.
Optelling: Σx*, Σx
2
*, Σy, Σy
2
, Σxy, Σx
3
, Σx
2
y, Σx
4
(Summation) tot
Aantal items: n* / Gemiddelde: 𝑥
*, 𝑦
/ Populatievariantie: σ
2
x
*, σ
2
y
/
Populatie standaardafwijking: σ
x
*, σ
y
/ Voorbeeldvariantie: s
2
x
*, s
2
y
/
Voorbeeld standaardafwijking: s
x
*, s
y
(Variable) tot ,  tot 
Minimumwaarde: min(x)*, min(y) / Maximumwaarde: max(x)*, max(y)
Wanneer de enkele-variabele statistische berekening is geselecteerd:
(Min/Max) ,
Wanneer een gecombineerde-variabele statistische berekening is
geselecteerd:
(Min/Max) tot
Eerste kwartiel: Q
1
* / Mediaan: Med* / Derde kwartiel: Q
3
* (alleen voor
enkele-variabele statistische berekeningen)
(Min/Max) tot
Regressiecoëfficiënten: a, b / Correlatiecoëfficiënt: r / Geschatte
waarden: 𝑥
, 𝑦
(Regression) tot
Regressiecoëfficiënten voor kwadratische regressie: a, b, c / Geschatte
waarden:
𝑥
1
, 𝑥
2
, 𝑦
(Regression) tot
𝑥
, 𝑥
1
, 𝑥
2
en 𝑦 zijn het soort commando’s die een argument nodig hebben,
direct vooraf.
Vb. 2: Om enkel-variabele gegevens in te voeren x = {1, 2, 2, 3, 3, 3, 4, 4,
5}, d.m.v. de Freq-kolom om het aantal herhalingen voor ieder item te
specificeren {x
n
; freq
n
} = {1;1, 2;2, 3;3, 4;2, 5;1}, en het gemiddelde te
berekenen.
(SETUP)(Statistics)(On)
(Select Type)(1-Variable)
12345
1232
(Variable)(𝑥
)
3
Vb. 3: Om de logaritmische regressie-correlatiecoëfficiënten te berekenen
voor de volgende gecombineerde-variabele gegevens en de
regressieformule te bepalen: (x, y) = (20, 3150), (110, 7310), (200, 8800),
(290, 9310). Geef Fix 3 (drie decimaalplaatsen) op voor resultaten.
(SETUP)(Statistics)(Off)
(SETUP)(Number Format)(Fix)
(Select Type)(y=a+bln(x))
20110200290
3150731088009310
(Regression)(r)
0.998
(Regression)(a)
-3857.984
(Regression)(b)
2357.532
17
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