Module · Data Analysis
Chapter 29: Data Interpretation
Data Analysis
4 topics
What this chapter covers
The 4 topics below make up Data Interpretation on the GRE. Click any topic to open its notes, examples and practice test.
Study material & tests
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Notes, worked examples and hint-guided practice for every topic.
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🎯 Topic tests
8 auto-graded questions per topic, pulled from the question bank.
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📝 Chapter test
25 fresh mixed-difficulty questions, timed, with full solutions.
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Formula Reference Sheet
This chapter
The workhorse relationships
| Percent of a total | (part / total) × 100 % |
|---|---|
| Percent change | (new − old) / old × 100 % |
| Value from a pie slice | (slice percent) × grand total |
| Slice angle ↔ percent | percent = (angle / 360°) × 100 |
Reading & estimating
| Average of several bars | (sum of the bar heights) / (number of bars) |
|---|---|
| Ratio of two categories | value A : value B (same units!) |
| Estimation cue | if the answer choices are far apart, round and skip the calculator |
GRE reference
🖩 Graphing Calculator