Which data presentation method best communicates the analysis of population data over the last five years?

Which data presentation method best communicates the analysis of population data over the last five years?

• A. By looking for a pattern
• B. By guessing and checking
• C. By means of a table
• D. By means of a graph

Answer: (D)

Presenting population data over time with a graph makes the trend clear. A line graph, in particular, lets you see year-to-year changes and the overall direction at a glance, so you can quickly tell whether the population is rising, falling, or stabilizing across the five-year period and estimate how fast it’s changing. A table shows the exact numbers, but it doesn’t highlight the direction and pattern as readily; you’d have to scan across rows or columns to infer trends. Guessing and checking isn’t a presentation method, and looking for a pattern describes analysis steps rather than how to present results. So a graph communicates the analysis most effectively.

Presenting population data over time with a graph makes the trend clear. A line graph, in particular, lets you see year-to-year changes and the overall direction at a glance, so you can quickly tell whether the population is rising, falling, or stabilizing across the five-year period and estimate how fast it’s changing. A table shows the exact numbers, but it doesn’t highlight the direction and pattern as readily; you’d have to scan across rows or columns to infer trends. Guessing and checking isn’t a presentation method, and looking for a pattern describes analysis steps rather than how to present results. So a graph communicates the analysis most effectively.