Boxplots A and B show information about waiting times at a post office. Boxplot A is before a new queuing system is introduced a
nd B is after it is introduced. Compare the waiting times of the old system with the new system. 10 Waiting time (minutes) 25 30 B 25 "Waiting time (minutes 20 30
Both Boxplots A and B have the same lower quaratile ranges well as the same median. However the old system had a larger upper quartile range,whilst the upper quaratile range of Box plot B was shorte.r
The equation that demonstrates a proportional relationship, maintaining a constant of proportionality equal to 14, is: Here, and are proportional with a constant of proportionality of 14.
