DA0-002 Visualization and Reporting Practice Question
Which TWO are common mistakes when creating data visualizations?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Using excessive 3D effects that obscure data
Options A and E are correct. Excessive 3D effects (A) can obscure or distort data, and truncating the y-axis (E) can mislead viewers by exaggerating differences. Option B is incorrect because sorting alphabetically can aid lookup, not a mistake. Option C is incorrect because color-blind friendly palettes are a best practice, not a mistake. Option D is incorrect because including a legend is standard good practice.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Using excessive 3D effects that obscure data
Why this is correct
Correct. Excessive 3D effects can distort or hide data, making it hard to interpret accurately.
- ✗
Sorting categories alphabetically in a bar chart
Why it's wrong here
Incorrect. Sorting alphabetically is a valid practice for easy lookup; it is not a common mistake.
- ✗
Choosing a color-blind friendly palette
Why it's wrong here
Incorrect. Choosing a color-blind friendly palette is a best practice, not a mistake.
- ✗
Including a legend to identify chart elements
Why it's wrong here
Incorrect. Including a legend helps identify chart elements and is generally good practice.
- ✓
Starting the y-axis at a value other than zero
Why this is correct
Correct. Starting the y-axis at a non-zero value (truncated axis) can mislead viewers by exaggerating differences.
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