The upper bar chart provides information regarding the performance of a US bus company over a 5-year period, from 1999 to 2003. The lower bar chart compares the number of complaints made by the passengers over the same period.
It is evident that both actual and target punctuality peaked in 1999, while the target arrivial on time dropped to its lowest in 2003 throughout the whole period. Additionally, the number of passengers’ complaints fluctuated from 1999 to 2001 and then saw a steady rise from 2001 to 2003.
In 1999, the actual performance of buses in terms of arrivial on time was the highest for the whole period, peaking at around 83%, slightly exceeded its target at that time(80%), both actual and target arrivial on time plummeted in 2000, with actual fell to approximately 30% and target fell to 45%. In the next two years, actual rose and remained at the same level at around 42%, sligtly above its target(40%). However, in 2003, the actual punctuality rose significantly to nearly 80%.
Regarding the number of complaints, the figure in 1999 was about 65%, at its lowest point for the period. Then fluctuated in the next two years, arriving at about 80%. Lastly, the bus company saw a steadily growth in terms of the complaint figure, peaking at about 120 in 2003.