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Chapter 1: Q 1.2. (page 55)

Here, once again, is the stem plot of travel times to work for 20randomly selected New Yorkers. Earlier, we found that the median was 22.5

Use your calculator to find the mean travel time. Was your answer to Question 1 correct?

Short Answer

Expert verified

The mean of 31.25is effectively bigger than the median of 22.5

Step by step solution

01

Given information

As per the provided information, the median is 22.5minutes.

The number of observations :20

02

Concept

The data is divided into stems (the highest digit) and leaves (the lowest digit) in a stem and leaf plot (the smallest digits). Before the personal computer, they were popular because they were a quick way to sketch data distributions by hand. When objects need to be displayed in a way that demonstrates the hierarchical structure as well as amount or size, pyramid charts are the ideal choice. This can include positions in management, items sold, and business locations, among other things

03

Explanation

The median trip time is 20 minutes, and the mean travel time is 22.5 minutes, which is effectively longer than the median. The mean time is 31.25 minutes, which is much longer than the median time of 22.5 minutes.

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Most popular questions from this chapter

Here, once again, is the stem plot of travel times to work for 20randomly selected New Yorkers. Earlier, we found that the median was 22.5minutes.

Based only on the stem plot, would you expect the mean travel time to be less than, about the same as, or larger than the median? Why?

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