The line graph illustrates the average cost( in euro) of 4 brand types of cell phones per month in a European nation between January and September in 2002.
Overall, Domo, Lex, and Alpha showed the upward trend over the period while Sim Tx was contrasted with these mobile, experienced a downtrend. Most notably, Alpha average of cost started at the lowest rate, and became the most expensive ones at the end .
Roughly, in January, users had to pay a lot of money for Domo, about 15 euros and Alpha was the opposite of it, started at 5 euros. Alpha’s average cost, which fluctuated slightly from January to June, went down to its original 5-euro before risking its peak at 25 euros in September. There was a slight increase in the cost of Domo in May, account for 5 euros, and went up to the highest rate at 25 euros. And at the end of period, the average cost of Domo fell by a minute quantity, at 23 euros.
Conversely, Lex’s monthly cost stood at 12 dollars in January, which was 3 euros higher compared to that of Sim TX, at 9 euros.
After six months, the average cosr of these brand mobiles stayed nearly at the same point around 15 euros in June. However, there was a moderate increase in the price of Lex, upped to 18 euros in September ,in contrast to Sim Tx’s average cost fell back to around 10 euros .