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Chapter 1: Q 53. (page 45)

Traveling to work How long do people travel each day to get to work? The following table gives the average travel times to work (in minutes) for workers in each state and the District of Columbia who is at least 16 years old and don’t work at home.

(a) Make a histogram of the travel times using classes of width 2 minutes, starting at 14 minutes. That is, the first class is 14 to 16 minutes, the second is 16 to 18 minutes, and so on.

(b) The shape of the distribution is a bit irregular. Is it closer to symmetric or skewed? About where is the center of the data? What is the spread in terms of the smallest and largest values? Are there any outliers?

Short Answer

Expert verified

The data approximately follow the symmetrical (normal) distribution.

Step by step solution

01

Given information

02

Concept

A histogram is an often used graphing tool. It's used to summarise discrete or continuous data that's measured on an interval scale. It's frequently used to highlight the most important characteristics of data distribution in a user-friendly way.

03

Explanation

Therefore, the data approximately follow the symmetrical (normal) distribution.

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