Question

the accompanying table shows the numbers of cell phone subscriptions per 100 people in a certain country for various years. construct a time - series graph for the data. what does this graph tell you about how quickly the rate of subscriptions is growing? (the number of subscriptions per 100 people can exceed 100 because some people have more than one subscription, such as for personal and business cellphones ) click the icon to view the cell phone subscription data construct a time - series graph for the data. choose the correct graph below

Explanation:

Step1: Understand the nature of time - series graph

A time - series graph shows data points over a period of time. In this case, the x - axis represents years and the y - axis represents the number of cell phone subscriptions per 100 people.

Step2: Analyze each option

• Option A: The graph is decreasing. But we expect the number of cell phone subscriptions (a technology - related service that has been growing in real - world scenarios) to increase over time, so A is incorrect.
• Option B: The graph is increasing. This is in line with the general trend of the growth of cell phone subscriptions over the years.
• Option C: The y - values start from a very low value (close to 0) which is not in line with the initial data of cell phone subscriptions (even in the early 2000s, cell phone subscriptions per 100 people were not close to 0 in many countries).
• Option D: The graph is highly volatile (with large up - and - down swings). But cell phone subscriptions have a more steady growth trend rather than such extreme volatility.

Answer:

B.