Current location - Training Enrollment Network - Mathematics courses - The following table shows the results of a math contest in Class 1, Grade 9 (unit: minutes): 70 80 90 Students: 10 20 10.
The following table shows the results of a math contest in Class 1, Grade 9 (unit: minutes): 70 80 90 Students: 10 20 10.
According to statistics, a * * has 10+20+ 10=40 people.
∴ The median should be the average of the scores of the 20th person and 2 1 person.
After sorting, the students ranked 20th and 2nd1scored 80 points.