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42 Mathematische Funktionen
Ermitteln Sie über das
Menü StatVars den
Durchschnitt (y) der
Daten in L2.
% u
1 (wählt
StatVars)
$ $ $
$ $ $
$ $
Beachten Sie, dass in der
Titelleiste Ihre letzte
Statistik- bzw.
Regressionsberechnung
angezeigt wird.
Untersuchen Sie die
Wertetabelle der
Regressionsgleichung.
I 1
< $
0 <
1 <
< <
Warnung: Wenn Sie nun die bivariate Statistik (2-Var Stats) für Ihre Daten berechnen,
werden die Variablen a und b (sowie r und r
2
) auf Grundlage einer linearen Regression
berechnet. Wenn nach einer Regressionsberechnung die Regressionskoeffizienten (a,
b, c, d) und r-Werte im Menü StatVars erhalten bleiben sollen, sollten Sie anschließend
also nie die bivariate Statistik neu berechnen.
Verteilung Beispiel
Berechnen Sie die Wahrscheinlichkeit für x {3,6,9} Erfolge bei einer Binomialverteilung
mit 20 Versuchen und einer Erfolgswahrscheinlichkeit von 0,6. Geben Sie die x-Werte
in der Liste L1 ein, speichern Sie die Ergebnisse in L2 und ermitteln Sie anschließend
die Summe der Wahrscheinlichkeiten und speichern Sie sie in der Variablen t.
Alle Daten
löschen
v v $ $ $
Daten
<
3 $ 6 $ 9
<
DISTR % u "
$ $ $
46


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