In this module, you'll learn all of the concepts, techniques and strategies needed to answer statistics questions on the GRE. In particular, this module covers:

 Mean Median Mode Range Weighted averages Standard deviation

### Two ways to prepare

Beneath most of the video lessons below you’ll find a Related Resources box containing practice questions that are specifically related to the concepts covered in that lesson (e.g., the lesson on mean, median and mode). With this lesson format, you have two study options:

• Watch the video lesson first and then reinforce your learning by answering several related questions, or…
• Tackle the practice questions first and watch the lesson only if you need help with the concepts the practice questions test

For more on this learning strategy, read the “How to Beat the GRE” section of our course overview page.

## GRE STATISTICS VIDEOS

• 1. Lesson: Mean, Median and Mode (5:27)
• 2. Question: Adding k to a Set (1:12)
• 3. Question: Two Unknown Values (0:56)
• 4. Question: Greatest of 5 numbers (2:30)
• 5. Lesson: When Mean = Median (2:22)
• 6. Lesson: Weighted Averages (8:00)
• 7. Lesson: Range and Standard Deviation (10:10)
• 8. Question: Ordering Standard Deviations (2:09)
• 9. Lesson: More Standard Deviation (3:01)
• 10. Question: Units of Standard Deviation (1:26)
• 11. Lesson: Normal Distributions (9:22)
• 12. Question: Comparing Apples with Apples (2:14)
• 13. Lesson: Boxplots (6:55)
• 14. Question: Boxplot-Based Conclusions (2:45)
• 15. Question: Mean of 2 Numbers (0:48)
• 16. Question: Mean is Less Than 4 (2:31)
• 17. Question: New Standard Deviation (1:33)
• 18. Question: Mean and Median of Set T (0:54)
• 19. Question: 7 Consecutive Integers (1:32)
• 20. Question: Heights of 6 Children (2:58)
• 21. Question: Standard Deviation Conclusions (1:10)
• 22. Question: Combined Test Scores (2:06)
• 23. Question: Multiples of 5 (0:36)
• 24. Question: Maximized Standard Deviation (1:01)
• 25. Question: Find the Mean in the Boxplot (2:29)
• 26. Question: Truth About Sets A & B (3:40)
• 27. Question: Range of Variable Expressions (2:28)
• 28. Question: Removing x From Set A (3:38)
Total viewing time for the GRE Statistics module: 86 minutes.

## Practice from the Official Guide

Practice the skills and GRE-specific strategies you learned in this module by answering the following questions from the Official Guide to the GRE (1st or 2nd edition):

127(3), 130(3), 159(13), 160(2), 165(2), 166(5), 167(9), 169(13), 170(15), 320(1-5), 322(16)

Here are the related questions in the Official Guide to the GRE (1st or 2nd edition):

• 122(3), 125(3), 149(13), 150(2), 155(2), 156(5), 157(9), 159(13), 160(15), 296(1-4), 297(5), 298(16)

Note: The above practice questions are listed in the form page#(question#). So, for example, 122(3) represents question #3 on page 122.