Table 1. Descriptive statistics for family and bachelor group size at the study locations, pooled across the years of study.
| Group Type | Site | PR | Density | N | Mean (SD) | Median | Range | %CV | Kurtosis | Skewness |
| Family | SP | Null | 3.95–26.3 | 185 | 6.1 (2.7) | 6 | 2–15 | 44.1 | 0.68 (0.3) | 0.82 (0.2) |
| Family | C2B | Null | 44.8–70.1 | 175 | 5.8 (2.3) | 6 | 2–13 | 40.4 | −0.02 (0.4) | 0.64 (0.2) |
| Family | LE | High | 6.7–13.4 | 277 | 6.1 (2.4) | 6 | 2–15 | 39.7 | 1.15 (0.3) | 0.85 (0.1) |
| Bachelor | SP | Null | 3.95–26.3 | 28 | 23.0 (17.2) | 20 | 3–75 | 74.7 | 1.18 (0.9) | 1.1 (0.4) |
| Bachelor | C2B | Null | 44.8–70.1 | 59 | 15.6 (11.1) | 11 | 2–51 | 71.4 | 0.25 (0.6) | 0.97 (0.3) |
| Bachelor | LE | High | 6.7–13.4 | 21 | 12.5 (9.2) | 10 | 2–30 | 73.5 | −1.13 (1.0) | 0.40 (0.5) |
Predation-risk level (PR), population density range expressed as guanacos.km−2 (Density), sample sizes (N), mean group sizes and standard deviations (SD), range of observed group sizes (Range), coefficient of variation (%CV), kurtosis (standard error of kurtosis) and skewness (standard error of skewness).