Data Visualization Dashboard Design 1 β Questions and Answers
Question 1: What is the primary purpose of a KPI (Key Performance Indicator) widget on a dashboard?
- Display raw data tables
- Show a single critical metric with context or comparison (Correct answer)
- Provide drill-down functionality
- Display historical trend lines
Correct answer: Show a single critical metric with context or comparison
KPI widgets surface a single critical number (e.g., revenue, conversion rate) alongside a target or trend for quick performance assessment.
Question 2: In dashboard design, what is meant by 'information hierarchy'?
- Sorting data from largest to smallest
- Organizing dashboard elements by importance, placing most critical information first (Correct answer)
- Grouping charts by data type
- Using consistent color coding across all panels
Correct answer: Organizing dashboard elements by importance, placing most critical information first
Information hierarchy arranges dashboard content so the most critical metrics receive prominent placement and visual weight, guiding the viewer's eye.
Question 3: What is the '5-second rule' in dashboard design?
- Dashboards should load within 5 seconds
- A viewer should be able to understand the main insight within 5 seconds (Correct answer)
- Data should be refreshed every 5 seconds
- Each chart should take no more than 5 seconds to create
Correct answer: A viewer should be able to understand the main insight within 5 seconds
A well-designed dashboard should communicate its primary insight or answer its core question within 5 seconds of viewing.
Question 4: Which layout principle recommends placing the most important dashboard elements in the top-left area?
- Golden ratio placement
- F-pattern or Z-pattern reading flow (Correct answer)
- Rule of thirds
- Pyramid layout
Correct answer: F-pattern or Z-pattern reading flow
Studies show Western readers scan screens in an F or Z pattern, starting top-left, so high-priority metrics belong there.
Question 5: What is a 'sparkline' in dashboard design?
- An animated loading indicator
- A small, word-sized trend line embedded inline with text or a metric (Correct answer)
- A highlighted data point
- A mini pie chart
Correct answer: A small, word-sized trend line embedded inline with text or a metric
Sparklines, popularized by Tufte, are compact inline charts (usually trend lines) that show data shape without axes or labels.
Question 6: What is the main difference between operational and analytical dashboards?
- Operational use color; analytical use grayscale
- Operational monitor real-time metrics; analytical support exploration and discovery (Correct answer)
- Operational are for executives; analytical are for data teams
- Operational show one metric; analytical show many
Correct answer: Operational monitor real-time metrics; analytical support exploration and discovery
Operational dashboards display real-time or near-real-time metrics for monitoring, while analytical dashboards support deeper exploration and pattern discovery.
Data Visualization Dashboard Design 1
What is the primary purpose of a KPI (Key Performance Indicator) widget on a dashboard?