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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 nine exercises: The population parameters below describe the full-time equivalent number of students (FTES) each year at Lake Tahoe Community College from 1976鈥�1977 through 2004鈥�2005.

鈥� 渭 = 1000 FTES

鈥� median = 1,014 FTES

鈥� 蟽 = 474 FTES

鈥� first quartile = 528.5 FTES

鈥� third quartile = 1,447.5 FTES

鈥� n = 29 years

75% of all years have an FTES:

a. at or below: _____

b. at or above: _____

Santa Clara County, CA, has approximately 27,873Japanese-Americans. Their ages are as follows:

a. Construct a histogram of the Japanese-American community in Santa Clara County, CA. The bars will not be the

same width for this example. Why not? What impact does this have on the reliability of the graph?

b. What percentage of the community is under age 35?

c. Which box plot most resembles the information above?

Listed are 29ages for Academy Award winning best actors in order from smallest to largest. 18;21;22;25;26;27;29;30;31;33;36;37;41;42;47;52;55;57;58;62;64;67;69;71;72;73;74;76;77a. Find the 40th percentile.

b. Find the 78th percentile.

A survey was conducted of 130 purchasers of new BMW 3 series cars, 130 purchasers of new BMW 5 series cars, and 130 purchasers of new BMW 7 series cars. In it, people were asked the age they were when they purchased their car. The following box plots display the results.

a. In complete sentences, describe what the shape of each box plot implies about the distribution of the data collected for that car series.

b. Which group is most likely to have an outlier? Explain how you determined that.

c. Compare the three box plots. What do they imply about the age of purchasing a BMW from the series when compared to each other?

d. Look at the BMW 5 series. Which quarter has the smallest spread of data? What is the spread?

e. Look at the BMW 5 series. Which quarter has the largest spread of data? What is the spread?

f. Look at the BMW 5 series. Estimate the interquartile range (IQR).

g. Look at the BMW 5 series. Are there more data in the interval 31 to 38 or in the interval 45 to 55? How do you know this?

h. Look at the BMW 5 series. Which interval has the fewest data in it? How do you know this?

i. 31鈥�35

ii. 38鈥�41

iii. 41鈥�64

The median age of the U.S. population in 1980 was 30.0 years. In 1991, the median age was 33.1 years.

a. What does it mean for the median age to rise?

b. Give two reasons why the median age could rise.

c. For the median age to rise, is the actual number of children less in 1991 than it was in 1980? Why or why not?
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