How do i find the lower quartile, upper quartile and inter quartile range of this data?

2.87, 2.91, 3.30, 3.33, 3.37, 3.38, 3.47, 3.62, 4.16, 5.16,5.37, 5.62, 6.97, 8.57, 9.79



i have two upper and lower qartiles

upper- 5.37 and 5.62

lower- 3.33 and 3.37



what do i do?How do i find the lower quartile, upper quartile and inter quartile range of this data?subtract the upper Q to the LQ and you get your IQR