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9
10
1.
2.
3.
4.
5.
6.
7.
1. (2x2, 2x3x3)
2. (treatment levels):
(experimental treatment):
3.
(blind test):
(double blind test):)
4.
Pre-experiments
True experiments
Field experiments
1.
X O
2.
O1 X O2
3.
X O1O2
1.
R O1 X O2R O3 O4
R X O1R O2
2. =(O2 -O1 )-(O4 -O3 )
=(O2 -O1 )
2.
R O1 (X)X O2
3.
R O1 O2 O3 X O4 O5 O6R O7 O8 O9 O10 O11 O12
O1 X O2O3 O4
1.
5.
(Random Assignment)
(Matching):
(external validity):
(internal validity):
()
12()( )(
)( )
X
X
()
-
() ()
( )(
) (
-1
(a)
(b)
(c)
-2(a)(b)(c)
22
N=10 N=10
N=10 N=10
-3
10 (40)
ANOVA
ANOVA
ANOVA
ANOVA
F
/
A BFacilitationCD
E
1 2 3 4 5
BCDEA
EABCD
DBCAE
CEADB
ADEBC
ANOVA
(X)(Y)
(F,t,)(r)F
)error(dfFFr
+=
Almquist, Eric & Wyner, Gordon (2001). Boost your marketing ROI with experimental design, Harvard Business Review, (Oct.) pp. 135-141.
no ok X
V ok
Q & A
The End
9 1. 3. 4. 1. 1. 2. 5. --1-2-3ANOVA 32