Which statement about limiting the scope in a visualization is true?

• A. Limiting the scope can mislead the audience by presenting an incomplete or biased view of the data.
• B. It makes charts easier to read.
• C. It always improves data completeness.
• D. It ensures data are perfectly unbiased.

Answer: (A)

Limiting the scope in a visualization means showing only part of the data to highlight a point. That can help readability, but it also hides context and variability, which can lead to a biased or incomplete interpretation. For example, focusing on a short time window or a subset of regions may make trends look stronger or more favorable than they are when considering the full dataset. To avoid misleading readers, you should clearly state what is included and what is left out, and consider presenting the full data or multiple views to provide a more balanced picture. The other options aren’t reliable: restricting scope doesn’t guarantee easier reading in every case, it doesn’t improve data completeness, and it doesn’t make data perfectly unbiased.