18-19 5 16-17 9 14-15 5 12-13 3 10-11 1 8-9 2 How many students are in the sample? 15 20 22 25

1 answer

The total number of students in the sample can be calculated by adding up the frequency for each age range:

5 + 9 + 5 + 3 + 1 + 2 = 25

Therefore, there are 25 students in the sample.