DA0-002 Visualization and Reporting Practice Question
Exhibit
Error: Incompatible data type for column 'revenue' in visualization chart. Expected numeric, received string.
Refer to the exhibit. What is the best corrective action to resolve this error?
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
✓
Convert the 'revenue' column to numeric data type during ETL
The error indicates a data type mismatch; converting the column to numeric in the ETL process ensures compatibility.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Convert the 'revenue' column to numeric data type during ETL
Why this is correct
Casting to numeric solves the type mismatch.
- ✗
Change the chart type to a bar chart
Why it's wrong here
Bar charts also require numeric data.
- ✗
Remove the 'revenue' column from the visualization
Why it's wrong here
Removing data is not ideal; better to fix the source.
- ✗
Use a string-compatible chart type
Why it's wrong here
Most charts require numeric axes for meaningful display.
Visual reference
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