| Inglés tesauro | |||
| |||
| Selection of samples by a process involving equal chances of selection of each item | |||
|
random sampling : 7 a las frases, 2 temas |
| Estadísticas | 3 |
| Matemáticas | 4 |
| Inglés tesauro | |||
| |||
| Selection of samples by a process involving equal chances of selection of each item | |||
|
random sampling : 7 a las frases, 2 temas |
| Estadísticas | 3 |
| Matemáticas | 4 |