Table 1
Least Squares and Logit Scales for the 1993 and the 1998 Paired-Comparison Data
| Probability expressions & their numerical equivalents (Reagan et al., 1989) |
Least squares scale for 1998 data (N=100) |
Least squares scale for 1992 data (N=188) |
Logit scale for 1998 data (N=100) |
Logit scale for 1992 data (N=188) |
| Almost impossible (2%) |
0.000 |
0.000 |
0.005 |
0.007 |
| Very unlikely (10%) |
-0.553 |
-0.235 |
0.006 |
0.014 |
| Improbable (15%) |
-0.448 |
-0.456 |
0.010 |
0.012 |
| Unlikely (15%) |
-0.292 |
-0.171 |
0.014 |
0.021 |
| Possible (40%) |
0.780 |
0.338 |
0.099 |
0.058 |
| An even chance (50%) |
0.427 |
0.205 |
0.059 |
0.049 |
| Probable (70%) |
0.917 |
0.780 |
0.163 |
0.141 |
| Likely (70%) |
1.225 |
0.995 |
0.276 |
0.200 |
| Very probable (80%) |
1.339 |
1.336 |
0.471 |
0.446 |
| Very likely (85%) |
1.443 |
1.385 |
0.546 |
0.516 |
| Almost certain (90%) |
1.643 |
1.560 |
1.000 |
1.000 |
Correlations between Paired-Comparison Scales
|
1 |
2 |
3 |
4 |
|
| 1. Least squares scale for 1998 data |
-- |
.97 |
.82 |
.78 |
| 2. Least squares scale for 1992 data |
-- |
.88 |
.85 |
|
| 3. Logit scale for 1998 data |
-- |
.99 |
||
| 4. Logit scale for 1992 data |
-- |