OPERATIONALISE
QUESTIONNAIRE
INFERENTIAL
OBSERVATION
INDEPENDENT
INDEPENDENT
EXTRANEOUS
LABORATORY
REPEATED
VARIABLE
CONTROL
NATURAL
SURVEY
RANDOM
FIELD
G
I
N
D
E
P
E
N
D
E
N
T
N
A
K
D
P
L
O
H
O
E
O
J
S
T
B
V
T
R
H
F
I
E
L
D
E
O
U
P
U
N
V
F
J
A
O
R
E
P
E
A
T
E
D
L
S
U
M
I
H
I
Z
L
Z
B
O
I
U
Q
S
Y
A
R
D
O
V
Y
O
B
X
O
U
H
I
T
E
V
J
A
I
I
O
U
A
R
V
M
D
R
C
D
B
E
A
A
U
O
T
E
I
E
O
W
I
T
R
Y
N
O
E
C
E
R
I
K
T
P
A
M
E
X
Y
J
Y
N
T
P
A
B
H
U
L
I
I
N
F
E
R
E
N
T
I
A
L
O
N
A
R
S
F
I
Q
A
Q
U
L
R
I
O
I
R
T
K
H
C
E
Z
Y
E
H
I
O
N
C
M
W
A
Z
U
E
A
R
Y
I
H
D
A
R
R
D
D
I
N
O
E
M
T
U
H
Q
N
I
L
O
P
N
O
O
V
V
I
E
O
X
I
U
I
X
U
F
E
D
R
V
O
E
I
T
A
R
M
F
I
E
L
T
O
S
L
O
O
H
M
A
Z
P
T
A
T
V
L
U
T
T
C
J
N
F
K
E
U
U
A
R
S
E
D
R
I
C
R
C
S
E
B
I
A
U
X
N
S
D
A
I
V
D
I
O
O
H
R
M
E
I
W
J
L
O
U
B
U
U
N
A
M
N
E
B
N
N
U
A
U
Y
O
H
I
I
D
X
R
U
E
B
P
I
E
A
I
T
E
Z
Q
I
A
W
S
M
I
L
V
D
H
L
D
E
J
L
V
N
O
N
A
I
E
U
E
Q
L
X
E
A
N
E
U
I
D
P
Z
M
E
D
D
Y
J
B
V
I
G
C
Y
N
A
T
U
R
A
L
E
