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Syntax StdDev(List n [,List m])
Variance (List
n [,List m])
List
n........gegevens
List
m .......Frequentiegegevens
Voorbeeld Om de
x-waardes hieronder op te slaan in List 1, de Frequentiewaardes
hieronder in List 2 en de standaard deviatie en variantie te bepalen
x
60 70 80 90
Frequentie 3 5 4 1
1. Kies in het hoofdmenu de modus STAT.
2. Gebruik de List Editor om de bovengenoemde gegevens op te slaan.
3. Kies in het hoofdmenu de modus RUN • MAT (of RUN).
4. Druk op de toetsen zoals aangegeven:
*(S TAT)(S • Dev)*)
(LIST)(List)@(List)AU
* fx-7400G
II: (STAT)(S • Dev)
)(S TAT)(Var)*)
(LIST)(List)@(List)AU
* fx-7400G
II: (STAT)(Var)
I Berekeningen met gebruik van TEST-commando
Belangrijk!
De volgende bewerkingen kunnen niet op de fx-7400GII worden uitgevoerd.
U kunt speciale functies gebruiken in de RUN • MAT modus of PRGM modus om
berekeningen uit te voeren die het zelfde zijn als de STAT modus
Z Test, t Test, en andere
testberekeningen (pagina 6-24).
Voorbeeld Om de
z score en p-waarde te bepalen als een Z-test op één steekproef
is uitgevoerd onder de onderstaande:
conditiestestconditie (μ conditie) x μ
0
*, aangenomen gemiddelde van
populatie μ
0
= 0, standaard deviatie van populatie σ = 1, gemiddelde
steekproef M = 1, aantal steekproeven n = 2
* “
μ conditie x μ
0
kan worden ingegeven door 0 in te voeren als
beginargument van het enkelvoudige steekproef
Z-testcommando
“OneSampleZTest”.
165


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