The chart below shows the average cost of monthly contract for four different mobile (cell phones) in a European country from January to September 2002, measured in euro.

The line graph illustrates, the price of various mobile contracts including(

domo

, Lex, Sim TX, and Alpha) in European nations from January to September 2002. The units were measured in

euros

.

Overall

, there was a rise in each contract except six tx, which showed a decreasing

trend

.

However

, Alpha showed an upward

trend

and its popularity increased suddenly

at the end

.

Whereas

,

Domo

showed a steady decrease at the final stage.

To begin

with, Alpha at the initial stage began with the lowest cost which was about 5

euros

this

amount remained unchanged up to February

after

this

the amount showed a slight increase.

Furthermore

,

this

trend

plummeted in

June

and reached the value of 5

euros

again but after

June

the graph showed a sudden rise and the value touched a price of more than 10

euros

but it increased more in September to about 25

euros

.

In addition

, lex and

domo

also

showed a rise but in the end, the rate of

domo

decreased slightly.

In contrast

, sim tx showed a little variation from April to

June

while

showing an upward

trend

whereas

from

June

it suddenly fell from 13

euros

to 10

euros

. And onwards reached to the lowest value in September about up to 8

euros

.