TABLE 7
FROM:
Great in practice, not in theory: An empirical examination of covered call writing
Michael L McIntyre and David Jackson
BACK TO ARTICLETable 7. Results of statistical tests
| 30 Day | 60 Day | 90 Day | ||||
|---|---|---|---|---|---|---|
| A | B | A | B | A | B | |
| Panel A: Sign test for matched pairs | ||||||
| Winners | 11 | 19 | 19 | 21 | 16 | 18 |
| Losers | 16 | 8 | 8 | 6 | 11 | 9 |
| Max | 16 | 19 | 19 | 21 | 16 | 18 |
| z | 0.7698 | 1.9245 | 1.9245 | 2.6943 | 0.7698 | 1.5396 |
| p-value | 0.221 | 0.027 | 0.027 | 0.004 | 0.221 | 0.062 |
| Panel B: Wilcoxon signed rank test | ||||||
| T | 168 | 115 | 102 | 58 | 182 | 148 |
| z | -0.5045 | -1.7778 | -2.0902 | -3.1473 | -0.1682 | -0.9850 |
| p-value | 0.307 | 0.038 | 0.018 | 0.001 | 0.433 | 0.162 |
