Solution: Let me give you a simple example. I hope you can understand. Example: The school conducted a standing long jump test for boys in Grade One of Senior High School, taking jumping ability 1.7m or above as the standard. The number of centimeters exceeding 1.7m is represented by a positive number, and the number of centimeters less than 1.7m is represented by a negative number. The results of the first group of 65,438+00 boys are as follows (cm):

Q: What is the percentage of students in the first group who meet the standards? Analysis: Because jumps of 1.7m and above are considered as up to standard, the number of centimeters exceeding 1.7m is represented by a positive number, and the number of centimeters less than 1.7m is represented by a negative number, so a score of 0 or a positive number is considered as up to standard, and one * * * has seven, which is the demand after dividing by the total number of people. Solution: The number of qualified people is 7, so the qualified rate is × 100.

A: 70% of the students in the first group met the standard. I hope I can help you. .