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Statistische Grafiken und Rechnungen Kapitel 7
kk
kk
k Med-Med-Grafik
Wenn eine Anzahl von extremen Werten erwartet wird, kann eine Med-Med-Grafik
an Stelle der Methode des kleinsten Quadrates verwendet werden. Dies ist auch ein
Typ einer linearen Regression, wobei jedoch der Effekt von extremen Werten minimiert
wird. Diese Methode ist besonders nützlich für die Erstellung einer hochzuverlässigen
linearen Regression aus Daten, die unregelmäßige Fluktuationen enthalten, wie z.B.
bei sainsonbedingten Untersuchungen.
2(Med)
4(DRAW)
Nachfolgend sind die Bedeutungen der obigen Parameter erläutert.
a ...... Steigung der Med-Med-Grafik
b ...... y-Schnittpunkt der Med-Med-Grafik
kk
kk
k Quadratische Regressions-Grafik
Eine quadratische Regressions-Grafik stellt eine Verbindung der Datenpunkte eines
Streudiagramms dar. Sie ist tatsächlich eine Streuung von so vielen Punkten, die
nahe genug beieinander liegen, um verbunden zu werden. Die folgende Formel
stellt eine quadratische Regression dar.
3(X^2)
4(DRAW)
S. 105
1234
S. 105
1234
129


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