# Data Analysis Topics and Exercise Examples

RyanBornPowerScore
PowerScore StaffJoined: 04/27/2016Posts:

**490**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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