Questions | Answer Key

Practice Exercise 17-2 Click HERE for a printer-friendly version

Before going further to learn about showing orderly data with histograms, try these review exercises. When you finish, compare your answers to those in the key that follows.

  1. A recent investigation of the study habits of fulltime students found that A students study an average of 13 hours per week, B students study 15 hours per week, C students study 11 hours per week, and D and F students study 8 hours per week. Draw a bar chart to represent that data.
     
  2. An American Webmaster is tracking the exact nation of origin of all foreigners who read her website. Create a bar chart for this data she collected for the last three months:

1482 Canada

661 Australia

634 United Kingdom

594 Sweden

576 Germany

435 Denmark

414 France

388 Japan

309 Italy

228 Netherlands
  1. Five counties in one region of a state are comparing the average amount of money spent on students in elementary school and in high school. The data for each of the five counties and the two types of school is in the following table.

County:

Green

Orange

River

Chester

Columbia

Elementary

7654

6298

11005

8763

8669

High school

7654

5674

9665

8277

8773

Create a Bar Graph that represents this data.

  1. The production levels over four quarters of a year for three manufacturing plants within a company are shown in the following chart.
  1st Qtr 2nd Qtr 3rd Qtr 4th Qtr
East 20.4 27.4 90 20.4
West 30.6  38.6 34.6 31.6
North 45.9  46.9  45 43.9

Create a Line Graph that shows the production levels of the three plants over time.

  1. According to the U.S. Census bureau1, the number of violent crime offenses from 1988 to 1998 were 12 to 14 million per year. The exact data appears below. Examine the data, create a Line Graph, and make some predictions for 1999, 2000, and 2001. Check your predictions when the next Census bureau report comes out.

Now, correct Practice Exercise 17-2 using the Answer Key below.

Answer Key 17-2 (Click HERE for a printer-friendly version) (top)

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Or, to emphasize the differences in hours, change the scale

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There are two ways to do this. The one on the left emphasizes differences between elementary and high school funding within a county. The one on the right emphasizes the differences among counties in the separate types of schools. Which you use should be determined by which comparison you are trying to highlight for the audience.

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Predicts continued downward trend in violent crime for 1999, 2000, and 2001, probably going below 12,000,000 violent crimes by 2001.

1http://www.census.gov/prod/2001pubs/statab/sec05.pdf

 

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