CompTIA Data+ (DA0-002)VisualizationEasy
A data analyst is designing a dashboard to display the proportion of sales contributed by each product category for the current quarter. The categories are 'Electronics,' 'Apparel,' 'Home Goods,' and 'Books.' Which chart type is MOST appropriate for visualizing this data?
- APie Chart
- BScatter Plot
- CBar Chart
- DLine Chart
Show answer & explanationAnswer & explanation
Correct answer: A. Pie Chart
A pie chart is ideal for showing parts of a whole, making it suitable for visualizing the proportion of sales contributed by each product category. Each slice represents a category's percentage of the total sales.
Why the other options are wrong
- B. Scatter plots are used to show relationships or correlations between two numerical variables, not proportions.
- C. Bar charts are effective for comparing discrete categories, but less ideal for showing parts of a whole compared to a pie chart, especially with few categories.
- D. Line charts are used to show trends over time, not proportions of a whole.
Pie Chart
A circular statistical graphic divided into slices to illustrate numerical proportion. Each slice represents a category's share of the total.
- Best for showing parts of a whole.
- Effective with a small number of categories (typically 2-6).
- Difficult to compare precise values between slices.
Memory trick: Pie slices show parts, like pizza parts.