A Guide to the GRE/Scatterplot Charts

= Scatterplot Charts =

Description
Scatterplot and bubble charts display individual data as points on a field for the purpose of comparing them.

“Bubble” charts use bubbles that get larger as the quantity gets bigger, while scatterplots typically do not. These chart types are rare on the GRE but are worth mentioning.

Scatterplot charts indicate how elements of a sample are distributed based on the measurement notches on either side. To isolate elements within a particular range on a scatterplot chart, follow the appropriate measuring notch.

Practice
1. Which type of merchandise has the greatest profit margin?

2. Which products are sold the most? The least?

Answers to Practice Questions
1. Based on the chart, fax machines have the greatest profit margin. The y axis depicts profit margin, and shows fax machines closest to the top. Note that the x axis doesn't mean anything.

2. The bubbles correspond to percentage of sales; thus, printers appear to be sold the most, followed by fax machines. Scanners and copiers are sold less, in roughly equal portions.