Census | Simple random sampling | Stratified random sampling | |||||
---|---|---|---|---|---|---|---|
Total | Stratum 1 | Stratum 2 | Stratum 3 | Stratum 4 | |||
Total number of trees | 958 | 900 | 779 | 297 | 217 | 141 | 124 |
Trees per lineal kilometer | 37.66 | 35.38 | 30.64 | 36.22 | 26.48 | 17.18 | 15.16 |
Coefficient of variation (%) | 46.77 | 32.30 | 51.11 | 37.20 | 70.52 | ||
Sampling error (%) | 17.32 | 19.35 | 29.51 | 38.98 | 60.39 |