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Übung Inferenzstatistik8. Aufgabenblatt
Marvin Schmitt
Aufgabe 8.1 (Mediation).
Im Folgenden finden Sie die Ergebnisse mehrerer Regressionsanalysen, um eine Media-
tionshypothese zu untersuchen.
(a) Visualisieren Sie das vermutete Mediationsmodell als Pfaddiagramm1 .
(b) Gehen Sie die vier Schritte der Mediationsanalyse aus den Vorlesungsfolien durch.
Tragen Sie jeweils das entsprechende b-Gewicht im Diagramm ein und beschreiben
Sie den Schritt.
(c) Beurteilen Sie die Ergebnisse: Liegt eine Mediation vor? Falls ja, welche Art?
by.×= 2.1
(Sohn Hy X!Y b t p
'
X t.o.z.n.s.su#F
>
Y (Intercept) 4.79 6.20 < .001
X O r
0¥ ¢m=
7 2.12 5.82 < .001
bun 0.58
*
X!M b t p
✓ (Intercept) 2.11 2.12 .042
M X O0.67 2.82 .021 r
M!Y b t p
)
Sohn't l : X - s
y (Intercept) 0.18 1.98 .039
x M Vorowssettungen M ①0.98 7.76 .013 ,
Sohn H 2 s
-
'
:
Schnitt 3: M - s
y X+M!Y b t p
Schnitt 4: Xt M →
Y (Intercept) 0.34 1.35 .009
X ①0.28 0.76 .245 us .
(c) lby.xllsdritthlclby.nl ( Schnitt) M 3.76 10.55 < .001
=D Mediation
nicht uosohiedeu von O !
by × Schnitt 4 us . by . .
Mediation
.
Vollstandige
1
wie in der Vorlesung!
1
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