The line graph illustrates the average payment of the monthly contract of four different cellular companies in one European country between January and September in 2012.
Overall, Domo had the highest average cost from January to August, followed by Lex. In contrast, Sim TX experienced a steady decline. Despite having the lowest number, Alpha witnessed a significant increase, ranking the highest position at the end of the period.
At the beginning, Domo had the highest prices, at 15 euros, this figure rose up to a peak of 25 euros in July before dropping slightly to 23 euros at the end of the period. Similarly, Lex began at 12 euros, witnessing a steady increase throughout the period, and reached 25 euros in September, recording the highest figure.
In contrast, Sim TX stood at 8 euros at the beginning, rising rapidly to take a peat at nearly 15 euros in June before decreasing steadily to 7 euros by September. Alpha had the lowest cost, starting at 5 euros, but surpassing all categories to reach the highest number in September, ending at 25 euros.