As expected, there is a strong negative correlation between the percentage of unseen words and the accuracy of Lematus 20-Ch: the rank correlation is R = −0.73 (p < 0.001; we use rank correlation because it is less sensitive to outliers than is linear correlation, and the plot clearly shows several outliers.)
to our original prediction, however, Lematus 20-Ch is actually more accurate for languages with greater ambiguity (R = 0.44, p = 0.05).