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Chapter 2: Q.6 (page 126)

In a survey, several people were asked how many years it has been since they purchased a mattress. The results are shown in Table 2.38

Short Answer

Expert verified

The output for line graph,

Step by step solution

01

Content Introduction

Line graphs are used to track changes across time, both short and long. When there are fewer changes, line graphs are preferable over bar graphs. Line graphs can also be used to compare changes for multiple groups over the same time period.

02

Content Explanation

The output for line graph,

The line graph is made in excel as follow:

  1. Select the given data and go to Insert in the menu bar.
  2. select "Insert line Chart" from the heading "Charts".
  3. Select 2-D line charts.
  4. Click on displayed chart and on the right hand side of the chart, a plus sign can be seen.
  5. Click on it and select chart elements written As Axis title, data label, Chart type, Legend, Label, as shown in the time series below

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Most popular questions from this chapter

When the data are skewed left, what is the typical relationship between the mean and median?

Use the following information to answer the next three exercises: Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell three cars; nineteen generally sell four cars; twelve generally sell five cars; nine generally sell six cars; eleven generally sell seven cars. Calculate the following:

mode = _______

Use the following information to answer the next two exercises. Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell three cars; nineteen generally sell four cars; twelve generally sell five cars; nine generally sell six cars; eleven generally sell seven cars.

Looking at your box plot, does it appear that the data are concentrated together, spread out evenly, or concentrated in some areas, but not in others? How can you tell?

Twenty-five randomly selected students were asked the number of movies they watched the previous week. The results are as follows:

Construct a box plot of the data.

a. For runners in a race, a higher speed means a faster run. Is it more desirable to have a speed with a high or a low percentile when running a race?

b. The 40th percentile of speeds in a particular race is7.5 miles per hour. Write a sentence interpreting the 40th percentile in the context of the situation.
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