For a given data set, suppose q1 = 40, q2 = 45, q3 = 50. Also, suppose that the three smallest observations are 20, 24, and 28. Which of the following is true about the box plot for this data set?
1) The lower quartile is 40
2) The upper quartile is 50
3) The median is 45
4) The range is 30
