Consider the following question: Set T consists of all multiples of 5 from 30 to 225 inclusive Column A Column B Mean of Set T Median of Set T A. The quantity in Column A is greater B. The quantity in Column B is greater C. The two quantities are equal D. The relationship […]

# Archive | GRE Data Analysis

## GRE Statistics

Below are the essentials to statistics on the GRE math section. These concepts are essential, so make sure you master them before walking into the test! Mean The mean is another way of saying average. To find the average add up the number of elements in the set and divide by the number of […]

## The Difficulty of Context: Combinations and Permutations Questions

Over the last couple of months, I have covered a fair amount of GRE combinations and permutations questions on the blog. I’ve gone from the very basic to the very difficult (so difficult that they are more ‘fun problem’ than practical practice). Often, when you are stumped on a problem, it is not that the […]

## GRE Statistics: Conceptualizing Weighted Averages

Understanding Statistics (mean, median, and mode) questions on the GRE is becoming more sophisticated. You will not simply be asked to find the mean, but to think conceptually. For instance, let’s compare the following two problems: 1. What is the mean of 17, 23, 25, 36, 49? (A) 25 (B) 26 (C) 30 (D) 34 (E) 40 […]

## GRE Combinations and…Non-combinations

Whenever I see a GRE resource label its counting section as “Combinations and Permutations,” a small part of me dies a little. Okay, that’s an exaggeration, but I am concerned about the misleading message that this sort of title conveys. To me, it suggests that counting questions can be solved using either permutations or combinations, […]

## Rules and Counting Techniques for Probability on the GRE

In my last two posts, we looked at ways to make up time with probability questions on the GRE by quickly eliminating answer choices, and then guessing the correct answer. In those posts, we examined the following question: From a group of 5 managers (Joon, Kendra, Lee, Marnie and Noomi), 2 people are randomly selected […]

## GRE Probability Questions: Using the Elimination Strategy

In my last post, we examined the following question. From a group of 5 managers (Joon, Kendra, Lee, Marnie and Noomi), 2 people are randomly selected to attend a conference in Las Vegas. What is the probability that Marnie and Noomi are both selected? (A) 0.1 (B) 0.2 (C) 0.25 (D) 0.4 (E) 0.6 In […]

## GRE Probability Questions

If you’re like most students, you probably struggle with the GRE’s time constraints, and you probably have difficulties with probability questions. Great! In this article, we’ll examine how probability questions can provide you with a convenient opportunity to make up lost time. To set this up, please consider the following scenario: It’s test day, and […]

## GRE Math – Mean and Median (Sorry Mode, You Weren’t Invited)

Mean and Median This is an area of math that is oftentimes given short shrift. Many students think, hey, I know median and mode—those problems are easy. On the actual test, though, students oftentimes end up trying to solve a mean problem in a far more laborious and time-consuming way than is necessary. Take a […]

## Do You Know Enough Statistics to Get by on the GRE?

On the quantitative section of the GRE, you have some fringe concepts. Standard Deviation is definitely one of these, as you can take a couple of quantitative sections without ever having to deal with this concept. Still, it is a good idea to have a general sense of Standard Deviation before walking into the GRE. […]