Table 2 The number of repeated observations needed to achieve a stated margin of error for each of the indices, at their respective point of lowest coefficient of variation
Index | Mean (%) | Margin of error (%) | Number of repeated observations | 95 % confidence interval |
|---|---|---|---|---|
Standing index | 19.1 | 8.8 | 1 | 10.3 – 27.9 |
5 | 3 | 14.1 – 24.1 | ||
2.5 | 12 | 16.6 – 21.6 | ||
Cud chewing index | 62.4 | 12.7 | 1 | 49.7 – 75.1 |
5 | 6 | 57.4 – 67.4 | ||
2.5 | 26 | 59.9 – 64.9 | ||
Rumination index | 62.4 | 9.4 | 1 | 53.0 – 71.8 |
5 | 4 | 57.4 – 67.4 | ||
2.5 | 14 | 59.9 – 64.9 |