Table 3.
Olkin and Pratt weighted average (), effect size number (K), homogeneity test (Qwj), and the degree of inconsistency (I2) between AP measure.
| AP measure | N | K | Qwj | P | I2 % | |
|---|---|---|---|---|---|---|
| GPA | 11,623 | 0.28 | 30,00 | 246.68 | 0.001 | 88 |
| ACS | 205 | 0.14 | 1,00 | – | – | – |
| AA | 1,337 | 0.24 | 5,00 | 16.35 | 0.003 | 76 |
| ABE | 161 | 0.20 | 1,00 | – | – | – |
| AT | 165 | 0.12 | 1,00 | – | – | – |
| MA | 169 | −0.24 | 1,00 | – | – | – |
| GA | 2,168 | −0.01 | 2,00 | 0.49 | 0.485 | 99 |
| TRA | 254 | 0.23 | 2,00 | 1.90 | 0.168 | 47 |
| VSLECRA | 142 | 0.38 | 1,00 | – | – | – |
| WAEC | 1,563 | 0.74 | 1,00 | – | – | – |
| SAT | 139 | 0.07 | 1,00 | – | – | – |
| GCSE | 1,935 | 0.14 | 3,00 | 35.07 | 0.001 | 94 |
Qw = 300.48, p < 0.001.
Qb = 955.71, p < 0.001.