Table 3.
Association of tribe and the distribution of individual rugae shape with sex.
| Tribe | DF | Chi square (χ 2) | Critical value | Chi (ρ) calculated P value | Inference | ||
|---|---|---|---|---|---|---|---|
| Igbo | Ikwerre | ||||||
| Wavy | |||||||
| Male | 161 | 119 | 1 | 1.039 | 3.84 | 0.31 | No significant association |
| Female | 188 | 117 | |||||
| Curvy | |||||||
| Male | 19 | 12 | 1 | 0.011 | 3.84 | 0.91 | No significant association |
| Female | 21 | 14 | |||||
| Circular | |||||||
| Male | 87 | 151 | 1 | 3.270 | 3.84 | 0.07 | No significant association |
| Female | 82 | 99 | |||||
| Straight | |||||||
| Male | 19 | 33 | 1 | 0.397 | 3.84 | 0.53 | No significant association |
| Female | 15 | 34 | |||||
| Converging | |||||||
| Male | 10 | 7 | 1 | 0.829 | 3.84 | 0.36 | No significant association |
| Female | 5 | 7 | |||||
| Diverging | |||||||
| Male | 16 | 13 | 1 | 8.642 | 3.84 | 0.003 | Significant association ∗ |
| Female | 3 | 18 | |||||
The asterisks were used to demonstrate values with significant difference.