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 […]

# Archive | GRE Data Analysis

Also known as data interpretation.

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 […]

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. […]

On a recent post I went over factorials. Now let’s try a word problem that actually uses the factorial sign. Five students must sit in 5 chairs. How many different ways can they sit? (A) 30 (B) 60 (C) 4! (D) 5! (E) 6! In this problem we have a set number of people. Our […]

At the mere mention of probability on the GRE students’ eyes glaze over and all conversation stops, save perhaps for the hushed admission that they don’t like probability. While probability can be very difficult—and many of the publishers give it short shrift (so there are a lack of practice problems)—keeping a few concepts in mind […]