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Archive | Data Interpretation

How Many Data Interpretation Questions on the GRE?

For students who spend most of their time studying from the ETS book and the on-line paper-based tests, you are probably used to seeing four Data Interpretation questions per test. On the actual test, which has twenty questions per math section, there are only three Data Interpretation questions per section, leading to a total of […]

GRE Math: Histograms

First, a practice question about the following scenario. In a survey, 86 high school students were randomly selected and asked how many hours of television they had watched in the previous week.  The histogram below displays their answers.     1)   Histogram First, a reminder on histograms.  Histograms are not simple bar or column […]

Boxplots on the GRE

Boxplots are one data format you may see on the GRE Data Interpretation questions.  First, try these practice questions. (The following diagram applies to questions #1-3) The following boxplot shows the 2012 season runs batted in (RBIs) of 280 American League batters (the top 280 batters in terms of number of plate appearances). 1) What […]

Breakdown of the Most Commonly Tested GRE Quant Concepts

The 2nd edition Official Guide has just been released. At the back of the book is a new test (GRE Practice Test 2). In general, the concept break down is not surprising, if you look at the concepts that pop up in Practice Test 1 (which is the same as the practice test in the […]

Best Fit Lines in GRE Data Interpretation

One category of graph you certainly could see on GRE Data Interpretation questions is the scatterplot, and its associated idea of the best fit line. Let’s talk about how these beasts operate! Scatterplots To begin, let’s review scatterplots.  When each data point (each person, each car, each company, etc.) gives you a value for two […]

The Basics of Data Interpretation on the GRE

Fact: within the course of each Quantitative section, you will have, on average, two sets of Data Interpretation questions.  Each set will present data in some form (graph, table, etc.), and you will have two or three consecutive questions on that same data set.   Why does the GRE ask Data Interpretation questions? Absolutely in […]

GRE Data Interpretation Strategies

Helpful Tips for the GRE Data Interpretation Section If I had to count the number of questions/concerns regarding combinations or permutations, I’d have to use some pretty mighty factorials to do so. On the other hand, if I had to count the number of times students have expressed the same misgivings regarding Data Interpretation, I’d […]

Save Time on GRE Math — The Power of Approximation

Timing is a big issue for many on the GRE math section. One way in which students could end up saving precious minutes is by using mental math shortcuts, the most powerful of which is known as approximation. What I’ve noticed, however, is some students feel they have to set up some sort of proportion to […]