The provided line graph illustrates US consumer’s average yearly expenditures on the mobile phone and residential phone services over a ten-year-period from 2001 to 2010.
Overall, the yearly expense of traditional phone services experienced gradual decline with minimal fluctuations ranging between around $700 in 2001 to roughly $400 in 2010. On the flipside, smart phone assistances displayed a continuous upward trend, rising from $200 to $800 in the same period.
During the period under consideration, the residential phone services varied between around $700 to $400, reaching its peak of approximately $550 in 2006. Despite minor variations, the service expenditure declined substantially throughout the years.
Conversely, cell phone services demonstrated a constant upward trajectory from 200 dollar in 2001 to 800 dollar in 2010. The speed of upward movement slowed down from 2002 to 2003, where the price of cell services remained constant around $300. Similar trend was experienced from 2007 to 2008, where the cost remained between $600-700. and then climbed to $800 in 2010.
The expenditure of both the services showed opposite trend, where one demonstrated a continuous upward trend, whereas other experienced a continuous downward trajectory.