# Data Analysis Topics and Exercise Examples

edited Fri Jul 29, 2016
PowerScore StaffJoined: Wed Apr 27, 2016Posts: 541

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

• 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
• Distributions
• Continuous Probability Distributions, especially the Normal Distribution ("Bell Curve")
• Frequency Distributions (more Tables and Histograms)
• Example Problems
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