Data Visualization Flashcards
6 cards from real Data and Analytics 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 flashcards as text
What does a waterfall chart primarily illustrate?
Answer: Cumulative effect of sequential positive and negative values
A waterfall chart shows how an initial value is affected by a series of positive and negative incremental changes to reach a final value.
In Power BI, what is a 'slicer' used for?
Answer: Filtering dashboard visuals interactively by selected values
A slicer in Power BI is an interactive filter control that lets users segment all visuals on a report page by selected values.
What is the purpose of a choropleth map?
Answer: Using color intensity to represent data values across geographic regions
A choropleth map shades geographic regions with colors proportional to a data variable, enabling geographic comparisons.
Which Python library is most commonly used for statistical data visualization?
Answer: Seaborn
Seaborn is built on Matplotlib and provides a high-level interface for drawing attractive and informative statistical graphics.
What is a Gantt chart primarily used for in data projects?
Answer: Project scheduling and timeline management
A Gantt chart displays project tasks as horizontal bars along a timeline, showing start dates, durations, and dependencies.
What is 'chart junk' in data visualization?
Answer: Visual elements that add clutter without conveying information
Chart junk refers to unnecessary visual elements like decorative patterns, 3D effects, and gridlines that clutter charts without adding meaning.