highly significantp < 0.0001
Variation of hominin body size by time Linear regressions of body size by chronometric age ( figure 1 ) find a strong positive and highly significant correlation with body mass ( F = 226.551; p < 0.0001; R 2 = 0.475; d.f. = 250) and stature ( F = 125.337; p < 0.0001; R 2 = 0.384; d.f. = 201).