Data Visualization Design · Quiz 1 · Sep 2025

Q5. A teacher collected the exam scores of 200 students, ranging from 0 to 100. She wants to analyze the distribution pattern of the scores, check for skewness, and identify any clusters of performance levels (such as most students scoring between 40 and 60). Which of the following visualizations would be the most appropriate? A) Pie chart B) Scatter plot ©) Line chart D) Histogram E) Network diagram Q6. A data analyst is studying a dataset with three continuous variables: study hours, exam score, and stress level. She wants a visualization that can display the relationship among all three at once (e.g., how stress level varies with study hours and exam score). Which visualization would be most suitable? A) Heatmap B) Bubble chart C) Tree map D) Bar chart Q7. Which of the following is an example of nominal data? A) Zip codes of postal addresses B) Ranking of students in class ©) Annual income of employees D) Temperature differences between cities Q8. A government agency wants to visualize the literacy rates across all districts in a state. They want the map to show how literacy levels vary geographically, using different shades of color to represent higher or lower percentages. Which type of visualization would be most appropriate? A) Heat map B) Cartogram C) Flow map D) Choropleth map Q9. Which of the following best describes the given picture scenario? A) Visual confirmation B) Visual discovery C) Idea generation D) Idea illustration Q10. What type of visualization is a Sankey diagram? A) Hierarchical B) Flow-based C) Temporal D) Distribution Q11. When visualizations are designed only for aesthetics without clarity, which principle is being violated? A) Data-ink ratio B) Semantics C) Storytelling D) Interactivity Q12. A pie chart is most suitable for showing: A) Changes over time B) Correlation between variables C) Part-to-whole relationships D) Geospatial trends

Q2. If the goal is to visualize both total revenue and the number of orders for each category in the same chart, which visualization techniques would be most suitable? A) Bubble chart, where the X-axis represents Total Revenue, the Y-axis represents Number of Orders, and each bubble is labeled with the Product Category. B) Dual-axis chart with revenue on one axis and number of orders on the other ©) Stacked bar chart with revenue and orders stacked together D) Treemap where block size represents revenue and color intensity shows number of orders E) Heatmap with Product Categories on one axis and the two metrics (Total Revenue, Number of Orders) on the other axis, where both metrics are mapped using a standardized color scale based on relative value (e.g., Min-Max normalized). Q3. Select the correct statements about infographics: A) They often combine visuals with storytelling. B) They are primarily used for scientific analysis of raw data. © They emphasize context in addition to data. D) They are usually interactive by default. E) They may sacrifice detail for clarity. Q4. Which visualization(s) can show hierarchical structure? A) Tree map B) Dendrogram © Choropleth map D) Network graph Q5. Identify the roles of color in data visualization: A) Highlighting patterns and differences B) Always ensuring aesthetic beauty only © Encoding categorical data D) Creating emphasis in storytelling