voice category | shape of hard palate | shape of epiglottis | |||||
| oval | arched | flat | total | high | lower | total |
contralto | 5 | 0 | 2 | 7 | 1 | 6 | 7 |
| 71% | 0% | 29% | 100% | 14% | 86% | 100% |
mezzosoprano | 3 | 7 | 2 | 12 | 8 | 4 | 12 |
| 25% | 58% | 17% | 100% | 67% | 33% | 100% |
soprano | 2 | 5 | 9 | 16 | 10 | 6 | 16 |
| 13% | 31% | 56% | 100% | 63% | 37% | 100% |
Pearson Chi-square |
| 13.53 |
|
|
| 5.68 |
|
p-level |
| 0.009 |
|
|
| 0.058 |
|