July 16, 2015
This is not your typical section in a GMAT quantitative review; however, there is no other place to put the few topics that fall into GMAT sets. Also, much of what is learned in a few of these subjects can be used to simplify problems in other areas. Average and weighted average especially will offer some core ways to think about other problems. Just because this is the shortest section does not mean that it is not important. Like always, study diligently and it will pay off in the end.
GMAT Averages are likely a discipline that you have under control. After all, it is just a simple average. Yet, there are a few methods that might help with your accuracy and quickness.
This is a section that overlaps with many other sections in the GMAT Word Problems section. Learn the techniques for GMAT weighted averages here.
You are likely to see at least 3 GMAT Overlapping Sets problems on test day. Learn how to use the square to simplify your work.
This is an area to spend some time. Even though you will not have to perform some of the calculations, there are plenty of questions that you will have to know the information in this section. GMAT Statistics.
Review GMAT Statistics