Averages are a core concept on the GMAT, testing your ability to work logically with sets of data. Success requires moving beyond simple calculation to master weighted averages and the unique demands of Data Sufficiency. This guided path will build that expertise.
Start with the core definition of the Arithmetic Mean and use our interactive analyzer to see how Sum, Count, and Range are related.
Learn the most important strategy for solving average-based word problems: immediately converting an average into a Sum Total.
Master the concept of weighted averages for common GMAT scenarios where some data points are more important than others.
Apply your knowledge to the most unique GMAT question type. Learn to analyze average statements for sufficiency without calculating.
Explore two powerful shortcuts: how averages behave when scaled, and how to instantly find the average of an arithmetic sequence (mean = median).
Understand the definition of the Geometric Mean and the AM-GM inequality, a useful shortcut for certain advanced GMAT problems.
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