In order to provide information on two variables, what must an economist use?
A) a bar graph
B) a pie chart
C) the coordinate system
D) a time-series graph

Question

Quizplus · Accepted Answer

To show two variables, an economist needs to use the coordinate system, which allows for the plotting of two sets of data on a two-dimensional graph. Bar graphs and pie charts are not ideal for showing the relationship between two variables, and a time-series graph is only useful if the two variables are measured over time.

In Order to Provide Information on Two Variables, What Must