DA0-002 Visualization and Reporting Practice Question
A data analyst needs to display the distribution of customer ages in a dataset. The ages range from 18 to 85, and the analyst wants to see the shape of the distribution and identify any outliers. Which chart type should be used?
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
✓
Histogram
A histogram shows the distribution of a continuous variable, while a box plot shows quartiles and outliers. The question asks for distribution shape, so histogram is more appropriate.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Scatter plot
Why it's wrong here
Scatter plots show relationships between two variables.
- ✗
Bar chart
Why it's wrong here
Bar charts are for categorical data.
- ✗
Box plot
Why it's wrong here
Box plots show quartiles and outliers but not the full distribution shape.
- ✓
Histogram
Why this is correct
Histograms show the distribution shape of continuous data.
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Written by Johnson Ajibi, MSc IT Security
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