The line graph gives information about the average cost of the monthly contract of four cellulal companies in one Europnean country from January to September in 2012.
Overall, the average monthly cost in three out of four companies went up throughtout nine months, while the price of the subscribtion in Sim TX fluctuated and eventually stayed roughly the same it had been in January. The most sharp rise was recorded by the contract in Alpha, which price increased nearly fivefold. As a result, Alpha moved from fourth to first place and became a cellular company with the most expensive monthly contract.
In terms of Domo and Lex, the cost of their contracts increased steadily with a slight fluctuation throughout the period. Domo was the most expensive cellular company in January. After its monthly contract’s price grew from around 15 to 25, it started going down marginally and reached about 23 euros in Sempember. Likewise, the cost of Lex’s contract rose from approximately 12 euros to just below 20 euros, showing a slight decrease in February and June.
As for Sim TX, its monthly contract ranked third among the four companies in January. Likewise Domo’s and Lex’s prices, the cost of the contract in Sim TX started growing with a slight fluctuation; however it reached its peak in June and throughout four months the figure returned to approximately its initial level (just below 10 euros), becoming the lowest among the four companies. In contrast, Alpha moved from the last place to the first one and became the company with the most expensive constact. Its price skyrocketed from 5 to 25 euros, demonstraring the sharpest growth among all companies.