19. Which of the following statements correctly interprets Q.?
A. 25% of the planes had arrived late for less than or equal to Q.
minutes
B. 25% of the planes had arrived late for more than or equal to
Q minutes
C. 25% of the planes had arrived late for Qminutes
D. 75% of the planes had arrived late for Q, minutes
20. The following are statements given by Jess, Mary, Joseph and
John:
Jess: The 2nd quartile value must be between 31 and 40.
Mary: The upper quartile value must be between 41 and 50.
Joseph: The lower quartile value must be between 21 and 30.
John: The median value must be between 21 and 30.
Who is has the correct statement?
A. John only
C. Jess, Mary and Joseph
B. Jess and Joseph only D. Jess, Mary, Joseph and John​