A survey of radio stations was conducted following the attacks on the World Trade Center in 2001. One of the variables recorded was the region the station was located in (east, center, or west). The variable "region" can be summarized in a graph by:
A)a bar chart.
B)a pie chart.
C)a histogram.
D)a bar chart or a pie chart.

Question

Quizplus · Accepted Answer

The variable "region" is a categorical variable, representing different categories (east, center, or west). Both bar charts and pie charts are suitable for summarizing and visualizing categorical data.

A Survey of Radio Stations Was Conducted Following the Attacks