If you look at the x and y value in each ordered pair you will realize that the y value is the square of the x value, i.e. 1² = 2; 2² = 4; 3²=9; 4² = 16; 5²= 25.
This is a conditional relative frequency. There are 36 students who are aged 14-17 and 24 of them skip breakfast. Therefore, the answer is 24/36 = 2/3 ≈ 67% (ans)
