Data Visualization & Communication Flashcards
6 cards from real CBDA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Data Visualization & Communication flashcards as text
What does a box plot (box-and-whisker plot) communicate that a bar chart cannot?
Answer: The median, quartiles, and spread including potential outliers
Box plots display the five-number summary (min, Q1, median, Q3, max) and flag outliers, revealing distributional shape.
When communicating uncertainty in data findings to business stakeholders, a CBDA analyst should:
Answer: Clearly communicate confidence intervals or ranges alongside the estimate
Communicating confidence intervals gives stakeholders a realistic picture of estimate reliability, supporting better decisions.
A heatmap is MOST useful for displaying which type of business data?
Answer: Relationships or intensity across two categorical dimensions
Heatmaps encode magnitude through color intensity across rows and columns, ideal for cross-tabulated categorical data.
Which of the following BEST describes 'preattentive attributes' in data visualization?
Answer: Visual properties like color, size, and position processed by the brain nearly instantly
Preattentive attributes (color, size, shape, position) are detected by the visual system before conscious attention, enabling instant pattern recognition.
In a business intelligence context, what is a KPI sparkline?
Answer: A small, simple inline chart showing trend context alongside a KPI metric
Sparklines are compact, word-sized trend charts placed next to metric values to show directional context without taking up space.
A CBDA analyst is preparing a visualization showing customer churn across US regions. Which map type is MOST appropriate?
Answer: Choropleth map
A choropleth map uses color intensity to represent variable values across geographic regions, making regional churn comparisons intuitive.