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V๎€๎€(Summation) ๎€ tot ๎€—
Aantal items: n* / Gemiddelde: ๐‘ฅ
โˆ’
*, ๐‘ฆ
โˆ’
/ Populatievariantie: ฯƒ
2
x
*, ฯƒ
2
y
/
Populatie standaardafwijking: ฯƒ
x
*, ฯƒ
y
/ Voorbeeldvariantie: s
2
x
*, s
2
y
/
Voorbeeld standaardafwijking: s
x
*, s
y
V๎€๎€‘(Variable) ๎€ tot ๎€—, ๎€๎€ tot ๎€๎€’
Minimumwaarde: min(x)*, min(y) / Maximumwaarde: max(x)*, max(y)
Wanneer de enkele-variabele statistische berekening is geselecteerd:
V๎€๎€’(Min/Max) ๎€, ๎€”
Wanneer een gecombineerde-variabele statistische berekening is
geselecteerd:
V๎€๎€’(Min/Max) ๎€ tot ๎€“
Eerste kwartiel: Q
1
* / Mediaan: Med* / Derde kwartiel: Q
3
* (alleen voor
enkele-variabele statistische berekeningen)
V๎€๎€’(Min/Max) ๎€‘ tot ๎€“
Regressiecoรซfficiรซnten: a, b / Correlatiecoรซfficiรซnt: r / Geschatte
waarden: ๐‘ฅ
, ๐‘ฆ
V๎€๎€“(Regression) ๎€ tot ๎€”
Regressiecoรซfficiรซnten voor kwadratische regressie: a, b, c / Geschatte
waarden:
๐‘ฅ
1
, ๐‘ฅ
2
, ๐‘ฆ
V๎€๎€“(Regression) ๎€ tot ๎€•
โ€ข ๐‘ฅ
, ๐‘ฅ
1
, ๐‘ฅ
2
en ๐‘ฆ zijn het soort commandoโ€™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
speci๏ฌceren {x
n
; freq
n
} = {1;1, 2;2, 3;3, 4;2, 5;1}, en het gemiddelde te
berekenen.
@U(SETUP)๎€๎€’(Statistics)๎€(On)
V๎€(Select Type)๎€(1-Variable)
1๎€™2๎€™3๎€™4๎€™5๎€™๎€๎€Œ
1๎€™2๎€™3๎€™2๎€™
๎€ŠV๎€๎€‘(Variable)๎€(๐‘ฅ
โˆ’
)๎€™
3
Vb. 3: Om de logaritmische regressie-correlatiecoรซf๏ฌciรซnten 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.
@U(SETUP)๎€๎€’(Statistics)๎€‘(Off)
@U(SETUP)๎€’(Number Format)๎€(Fix)๎€’
V๎€(Select Type)๎€“(y=a+b๏ฝฅln(x))
20๎€™110๎€™200๎€™290๎€™๎€๎€Œ
3150๎€™7310๎€™8800๎€™9310๎€™
๎€ŠV๎€๎€“(Regression)๎€’(r)๎€™
0.998
๎€ŠV๎€๎€“(Regression)๎€(a)๎€™
-3857.984
๎€ŠV๎€๎€“(Regression)๎€‘(b)๎€™
2357.532
Geschatte waarden berekenen
Op basis van de regressieformule die is verkregen door de
gecombineerde-variabele statistische berekening, kan de geschatte
waarde van y berekend worden voor een gegeven x-waarde. De
corresponderende x-waarde (twee waarden x
1
en x
2
, in geval van
23
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