The given bar chart represents the total number of hours spent by a citizen of UK on an average in various types of call, which includes, local, and international lines, and the mobile calls over a period of 8 years, ranging from 1995 to 2002, while the exacts represents the minutes of call which is in billions.
At first glance, it is clear that, people in the UK spends most of their calls in local fixed line, throughout the period given. Dialing in mobile phones is the least, which accounts to its maximum on the year 2002.
In more detail, the calls through local fixed line keeps on increasing from 70 billion minutes and accounts to its maximum of 90 billion minutes on the year, before the turning of the century. Then it begins to fall down in the next three years, and returned to its original time of 70 billion minutes in 2002. When a line is drawn through the top of its value, it provides us with an inverted parabola.
Conversely, the conversation between people in National and international lines, and mobiles tends to increase till the end of 2002. The former roast 260 billion minutes from 38 billion minutes with an average annual rise of 3 billion minutes. When it comes to mobile dials, it becomes 9 time of its original value which range is to 45 billion minutes spending on the phone calls.