To use the O’Connor method (letters) instead of the Mattson Method (percentages):
Then:
A - Very Likely
BC - Likely
DE - Even Chance
FG - Unlikely
HI - Very Unlikely
O’Connor Method - Relative value
to determine initial POA’s
VERY LIKELY
A
- <- -> -
VERY UNLIKELY
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
1
2
3
4
5
6
1
2
3
4
5
1
2
3
4
1
2
3
1
2
1
If lowest letter
used is:
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
As an example, If you evaluated area segments and they ranged from Very Likely to
Unlikely (A - G), then, going down the side to “G”, use only the “G” numbers under the
top row for each segment.
If there were 4 area segments, and they were evaluated as:
Segment 1 - G
Segment 2 - A
Segment 3 - C
Segment 4 - D
Then:
The total will be 17 (1+7+5+4) or (G+A+C+D)
The person’s POA for Segment 1 is 1/17
The person’s POA for Segment 2 is 7/17
The person’s POA for Segment 3 is 5/17
The person’s POA for Segment 4 is 4/17
Which now have to be converted to percentages:
Seg 1 - 6% Seg 2 - 41% Seg 3 - 29% Seg 4 - 24% = 100% (rounded)