Principle: Number of girls * (the difference between the average score of girls and the average score of the whole class) = Number of boys * (the difference between the average score of boys and the average score of the whole class)
Meaning: A high score equals a low score.
1, math, math. Pronunciation: beautiful/? m£¿ ¦Èm£¿ t£¿ ks/£» English/? m£¿ ¦Èm£¿ t£¿ ks/.
2. interpretation: mathematics n. mathematics; Mathematical operation.
3.