Table 1.
Chi-squared tests: predicted vs observed. This table enumerates the number of observations that have passed∕failed the chi-squared goodness of fit test for each of the three models (i.e., optimal single channel, Pythagorean sum, and algebraic sum).
| Expt. | Auditory freq. | Tactile freq. | Total | Optimal single channel | Pythagorean sum | Algebraic sum | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pass | Fail | Under-predict Fail | Pass | Fail | Under-predict Fail | Pass | Fail | Under-predict Fail | ||||
| 1 | 250 | 250 | 21 | 11 (52%) | 10 | 10 | 14 (67%) | 7 | 7 | 17 (81%) | 4 | 1 |
| 2 | 250 | 250 | 16 | 10 (63%) | 6 | 6 | 13 (81%) | 3 | 3 | 15 (94%) | 1 | 0 |
| 3 | 250 | 250 | 16 | 9 (57%) | 7 | 7 | 13 (81%) | 3 | 3 | 14 (88%) | 2 | 1 |
| Totals | 53 | 30 (57%) | 23 | 23 | 40 (76%) | 13 | 13 | 46 (87%) | 7 | 2 | ||
| 1 | 125 | 250 | 22 | 15 (68%) | 7 | 7 | 19 (86%) | 3 | 3 | 15 (68%) | 7 | 1 |
| 1 | 500 | 250 | 22 | 15 (68%) | 7 | 7 | 17 (77%) | 5 | 4 | 13 (59%) | 9 | 1 |
| 1 | 1000 | 250 | 22 | 11 (50%) | 11 | 8 | 16 (73%) | 6 | 2 | 14 (64%) | 8 | 0 |
| 1 | 2000 | 250 | 22 | 12 (55%) | 10 | 10 | 13 (59%) | 9 | 6 | 12 (55%) | 10 | 3 |
| 2 | 250 | 50 | 16 | 15 (94%) | 1 | 1 | 15 (94%) | 1 | 0 | 9 (56%) | 7 | 0 |
| 2 | 250 | 125 | 16 | 10 (63%) | 6 | 6 | 11 (69%) | 5 | 5 | 14 (88%) | 2 | 2 |
| 2 | 250 | 400 | 16 | 12 (75%) | 4 | 4 | 12 (75%) | 4 | 2 | 11 (69%) | 5 | 0 |
| 3 | 50 | 50 | 16 | 10 (63%) | 6 | 5 | 15 (94%) | 1 | 0 | 11 (69%) | 5 | 0 |
| 3 | 125 | 125 | 16 | 8 (50%) | 8 | 8 | 8 (50%) | 8 | 7 | 9 (57%) | 7 | 5 |
| 3 | 400 | 400 | 16 | 10 (63%) | 6 | 6 | 10 (63%) | 6 | 5 | 10 (63%) | 6 | 3 |