The graph illustrates the number of inquiries received by a particular tourist office over a six-month period starting in January 2011.
Overall, it is clear that tourists preferred modes of communication that provided instant feedback, such as in-person contact and cell phones, while the preference for postal and email inquiries was much lower.
The fastest-growing type of communication was direct questioning, which started at nearly 410 in January and climbed to over 1800 by June. Similarly, inquiries made by cellphone came in a close second. Throughout the first three months, the numbers did not consistently increase; January experienced a decline, and March saw stability until a moderate rise in February. Despite some fluctuations, preferences for cellphone inquiries peaked at 1600 in June.
In contrast, the number of letters and emails requesting information experienced a significant decline due to their decreasing convenience. Starting at roughly 800, the usage of these modes plummeted by half by the final month.