The line graph delineats the number of complains recieved by the complaints department of a single airline over a six-month period in 2009.
Overall,to make a complaint, in person complaint was the more popular way, while email/fax attracted the fewest persons. In general, the highest number of complaints were in June, and the least received in February.
In person method showed a significant increase over time. Almost 450 complaints were made in January, compared to the higher rate of 1900 in June, with a difference of 1350 complaints. For telephone, there was a slight drop from January to February, remained stable at 1000 from March to April, and rose in other months.
Email/fax was far less popular and experienced a contrast trend. A gradual downward trend was shown from January to March, but a sharp drop was observed from March to May by 350, and remained steady at aprroximately 400 for the last two months.
