From: Using diagnostic feedback to enhance the development of phonetic knowledge of an L2: a CALL design based on the unified competition model and the implementation with the Pinyin Tutor
Hotelling statistic
Hotelling p-value
Syllable w/o tone, initial, and final combined
0.6381
0.5951
Word, syllable, and tone combined
3.7306
0.0191
All components combined
2.3577
0.0512