Computer science · University
Visualization and summaries · revision notes
How observed values are spread across possible outcomes.
Key ideas and conditions
Distribution
How observed values are spread across possible outcomes.
Median
The middle ordered value, or midpoint of the two middle values.
Histogram
A graph grouping numerical observations into intervals.
Encoding
A visual mapping from data values to position, size, colour or another mark property.
Explain without looking
- Give a short example showing how Histogram would be used in practice.
- Summarize why Encoding matters in the lesson “Visualization and summaries”.
Further reading and review references
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