Table 7.
Auction price differences under competition: data
| Samples | Number | Percent: spread > 1.005 |
Median of spread | |||||
|---|---|---|---|---|---|---|---|---|
| Two Stage . |
Eng . |
Two Stage |
Eng. | Two Stag e |
Eng. | Med diff. Eng. > T.S. Chi2 p-value |
Rank diff. WMW: p-value |
|
| all | 1661 | 641 | .43 | .82 | 1.0 | 1.49 | .000 | .000 |
| Prob. comp. >0.5 | 590 | 574 | .69 | .85 | 1.17 | 1.51 | .000 | .000 |
| Prob. comp. >0.6 | 377 | 535 | .74 | .88 | 1.25 | 1.54 | .000 | .000 |
| Prob. comp. >0.7 | 212 | 503 | .77 | .90 | 1.39 | 1.56 | .029 | .017 |
| Prob. comp. >0.8 | 89 | 406 | .78 | .92 | 1.47 | 1.65 | .360 | .140 |
| Prob. comp.> 0.85 | 49 | 328 | .84 | .93 | 1.91 | 1.68 | .348 | .245 |
| Prob. comp.> 0.9 | 14 | 240 | 1 | .95 | 1.84 | 1.83 | .783 | .991 |