PPF in PWYW | |||
Duncana,b,c | |||
Country | N | Subset | |
1 | 2 | ||
Poland | 72 | 4.042 |
|
Australia | 77 | 4.494 | 4.494 |
Germany | 83 | 4.566 | 4.566 |
USA | 90 |
| 4.989 |
Sig. |
| 0.072 | 0.089 |