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Chapter 2: Q.19 (page 130)

Construct a frequency polygon from the frequency distribution for the 50 highest ranked countries for depth of hunger

Short Answer

Expert verified

The frequency polygon for the highest rank countries for depth of hunger:

Step by step solution

01

Content Introduction

A frequency polygon is a line graph representing class frequency against the midpoint of the class. The midpoints of the tops of the rectangles in the histogram can be joined to get it.

02

Content Explanation

We need to enter the data in Excel in order to draw a frequency polygon.

Steps followed are:

  1. Enter the data in excel worksheet as shown above.
  2. select Lower bound and frequency together. Go to insert and click on line chart.
  3. the chart will appear. Right click on any point and click on format data series.
  4. Go to marker option and select marker of choice and size.
  5. Click OK to get overlayed frequency polygon.

The so formed frequency polygon is:

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Most popular questions from this chapter

Use the following information to answer the next six 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.

10thpercentile = _______

Construct a frequency polygon for the following:

a.

b.

c.

Javier and Ercilia are supervisors at a shopping mall. Each was given the task of estimating the mean distance that shoppers live from the mall. They each randomly surveyed 100shoppers. The samples yielded the following information.

a. How can you determine which survey was correct ?

b. Explain what the difference in the results of the surveys implies about the data.

c. If the two histograms depict the distribution of values for each supervisor, which one depicts Ercilia's sample? How do you know?

d. If the two box plots depict the distribution of values for each supervisor, which one depicts Ercilia’s sample? How do you know?

Use the following information to answer the next three exercises: We are interested in the number of years students in a particular elementary statistics class have lived in California. The information in the following table is from the entire section.

The following data are the shoe sizes of 50male students. The sizes are continuous data since shoe size is measured. Construct a histogram and calculate the width of each bar or class interval. Suppose you choose six bars.

9;9;9.5;9.5;10;10;10;10;10;10;10.5;10.5;10.5;10.5;10.5;10.5;10.5;10.511;11;11;11;11;11;11;11;11;11;11;11;11;11.5;11.5;11.5;11.5;11.5;11.5;11.512;12;12;12;12;12;12;12.5;12.5;12.5;12.5;14

The population in Park City is made up of children, working-age adults, and retirees. Table 2.10shows the three age groups, the number of people in the town from each age group, and the proportion (%) of people in each age group. Construct a bar graph showing the proportions.
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