The ratio of actual attendance to expected attendance.Wang Anyou's "Cooperation": "The attendance rate of labor accounts for more than 50% of the total number of people day and night." Gu Yu's "Luobei Half Moon": "I think that as long as this is done, the attendance rate will definitely improve, and the disease that cannot be cured by medicine will be cured."
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For example, if there are 50 people in a class and 45 people come that day, the attendance rate is 90%;50 people came, that's 100%.