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Sampling and analytic structure by type of school (public or private) and geographical area (centre or coastal) in the 2002 survey
| Stratum† | Number of schools | Sampled schools | School’s weight | Student’s weight |
|---|---|---|---|---|
| Stratum 1 | 37 | 6 | 6·2 | 6·2 |
| Stratum 2 | 35 | 4 | 8·6 | 8·6 |
| Stratum 3 | 41 | 3 | 13·7 | 13·7 |
| Stratum 4 | 9 | 3 | 3·0 | 3·0 |
Stratum: 1=public and centre; 2=private and centre; 3=public and coastal; 4=private and coastal.
