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Casio FX 9750 Manual

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6-2020
Voorbeeld Voer een lineaire regressie uit met de gegeven waarnemingsgetallen en
bepaal de geschatte waarden van ŷ en ̂x wanneer xi = 20 en yi = 1000
xi
10 15 20 25 30
yi
1003 1005 1010 1011 1014
1. Kies in het hoofdmenu de modus STAT.
2. Voer de gegevens in de lijst in en teken de lineaire regressiegrafiek.
3. Kies in het hoofdmenu de modus RUN • MAT (of RUN).
4. Druk op de toetsen zoals aangegeven:
A?(waarde van
xi)
*(S TAT)* (
ŷ)U
* fx-7400G
II: (STAT)
De geschatte waarde
ŷ wordt weergegeven voor xi = 20.
@???(waarde van
yi)
(
ˆx)U
De geschatte waarde
ˆx wordt weergegeven voor yi = 1000.
• U kunt geen geschatte waarde verkrijgen voor de volgende diagrammen: lineaire regressie
ten opzichte van de mediaan, tweedegraads regressie, derdegraads regressie, vierdegraads
regressie, sinusvormige regressie of logaritmische regressie.
I Berekening en grafiek van een normale verdeling
In de modus RUN • MAT (of RUN) kunt u kansverdelingen voor statistieken met één variabele
berekenen en grafisch voorstellen.
Druk op *(E)(PROB) ((PROB) op de fx-7400G
II) (E) om een functiemenu
weer te geven dat de volgende items bevat.
• {P(}/{Q(}/{R(} ... berekent normale waarschijnlijkheid {P(
t)}/{Q(t)}/{R(t)} waarde
• {
t(} ... {berekening van de gestandaardiseerde waarde t(x)}
• De kansen P(
t), Q(t), en R(t), en de waarde van t(x) worden berekend met de volgende
formules.
Normale kansverdeling
P
(
t
)Q
(
t
)R
(
t
)
tt t
00 0
x
P
(
t
)Q
(
t
)R
(
t
)
tt t
00 0
x
… 162 …


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