# PowerScore GRE Forum

# Data Analysis Topics and Exercise Examples

RyanBornPowerScore
PowerScore Staff

Straight from ETS, maker of the GRE, here are the topics to know with example
exercises from POWERPREP,
the official practice tests.

Sources:
Official GRE Math Review [PDF} and
Official Introduction to the Quantitative Reasoning Measure.

**Graphical Methods for Describing Data (Graphs and Tables)**- Frequency Distributions ( in Tables and Histograms)
- Bar Graphs
- Circle Graphs
- Plots (Scatter and Time)
*Example Problems*

**Numerical Methods for Describing Data (Statistics)**- Mean, Median, and Mode
- Standard Deviation (which, most likely, you will NOT need to calculate)
- Percentiles, Quartiles, and Range
*Example Problems*

**Counting**- Combinations, Permutations, and Venn Diagrams
*Example Problems*

**Probability**- Basic Facts (for instance, 0 ≤ P(Event) ≤ 1)
and Event Types, such as
- Randomly Selected
- Independent
- Mutually Exclusive

*Example Problems*

- Basic Facts (for instance, 0 ≤ P(Event) ≤ 1)
and Event Types, such as
**Distributions**- Continuous Probability Distributions, especially the Normal Distribution ("Bell Curve")
- Frequency Distributions (more Tables and Histograms)
*Example Problems*

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