Data Visualization & Reporting Flashcards
7 cards from real CAP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Data Visualization & Reporting flashcards as text
Which chart type is most appropriate for displaying the distribution of a continuous variable?
Answer: Histogram
A histogram displays the frequency distribution of a continuous variable by grouping values into bins, making it ideal for understanding data distribution.
When visualizing the relationship between two continuous variables, which chart type is most commonly used?
Answer: Scatter plot
A scatter plot maps individual data points on two axes, making it the standard tool for visualizing correlations or relationships between two continuous variables.
A CAP analyst wants to show how a total value breaks down into component parts over time. Which chart type is best suited?
Answer: Stacked area chart
A stacked area chart displays part-to-whole relationships over time by stacking the series values, enabling comparison of both individual components and total values.
According to data visualization best practices, what is 'data-ink ratio' as defined by Edward Tufte?
Answer: The proportion of a graphic's ink devoted to displaying data versus non-data elements
Tufte's data-ink ratio is the fraction of a chart's ink that actually represents data; maximizing it means removing unnecessary decorative elements to improve clarity.
Which visualization is most effective for comparing values across multiple categories simultaneously, particularly when the number of categories is large?
Answer: Horizontal bar chart
Horizontal bar charts allow easy reading of long category labels and enable accurate length comparisons, making them superior for many-category comparisons.
In dashboard design, what does KPI stand for and what is its primary purpose?
Answer: Key Performance Indicator — monitors progress toward strategic goals
KPI stands for Key Performance Indicator; it is a quantifiable metric used to evaluate how effectively an organization or individual is achieving key business objectives.
A box plot (box-and-whisker plot) displays which five summary statistics?
Answer: Minimum, Q1, median, Q3, maximum
A box plot shows the five-number summary: minimum, first quartile (Q1), median, third quartile (Q3), and maximum, with whiskers extending to the data range.