Which of the following is an irresponsible practice in graphic presentation?

Question

BlackTom AI · Accepted Answer

Altering the axis range to exaggerate differences is a misleading graphic practice. Good data-visualization principles require truthful scaling, clear labels, and honest portrayal of uncertainty so readers can accurately judge magnitude and significance.

1) Relevant concepts
- Scale integrity: Axes should use ranges that reflect the natural span of the data (or clearly indicate truncation) so visual area corresponds to real differences.  
- Transparency: Error bars and titles communicate uncertainty and meaning.  
- Interpretation aids: Trend lines and annotations help understanding when used appropriately.

2) Step-by-step reasoning
- Ask: which choice distorts perception?  
- Option b says “Changing an axis range to make variations in data seem more significant.” That intentionally manipulates scale to exaggerate or minimize effects, violating scale integrity and misleading readers.  
- To illustrate quantitatively: if two data points are 48 and 52, the absolute difference is 4. On a 0–100 y-axis that difference occupies 4% of the axis. If the y-axis is truncated to 47–53, the same difference occupies 4 of 6 units ≈ 66.7% of the axis—visually much larger despite identical data.

3) Why the correct answer is correct
- Deliberately changing axis ranges for rhetorical impact creates a false visual impression of effect size. This undermines accurate interpretation and is considered irresponsible or deceptive in graphic presentation.

4) Why the other options are incorrect
- a. Adding error bars: Responsible practice because it shows uncertainty and measurement variability.  
- c. Adding trend lines: Helpful for summarizing patterns; acceptable if the method is appropriate and explained.  
- d. Using the graph title: Descriptive titles clarify what the graph conveys and are standard good practice.

Conclusion: Option b is the irresponsible practice; this matches the provided correct answer: b. Changing an axis range to make variations in data seem more significant.

Which of the following is an irresponsible practice in graphic presentation?单项选择题

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