Final answer:
To compare data between last year and this year, a bar graph or line graph would be the best choice, as they clearly display changes over time and allow for easy comparison of numerical or percentage values.
Step-by-step explanation:
Choosing the Best Data Display for Comparison
When the task is to provide a comparison between data from the last year and this year, a bar graph or a line graph are often the best choices. These types of graphs are ideal for showing changes over time and making year-to-year comparisons clear, especially when you have numerical or percentage values to compare. For instance, a bar graph could display two sets of bars for each category or time period side by side, allowing for quick visual comparison. Similarly, a line graph with multiple lines representing different years can show trends and fluctuations clearly over time.
If the data comparison needs to emphasize sizes, quantities, rates, or distances, then using these types of graphs will enable viewers to understand the changes or differences efficiently. Legibility is crucial, so ensuring that the scales are clear, the numbers are easy to read, and the colors used for each year are distinguishable can help viewers interpret the data accurately.