6th Grade Math Textbook, Fundamentals

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Germany USA Austria South Korea Sweden

14

12

10

8

6

4

2

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Gold Medal

Silver Medal

Bronze Medal

Country Gold Medals Total Medals

Germany 11 11  12  6  29

USA 9 9  9  7  25

Austria 9 9  7  7  23

South Korea 6 6  3  2  11

Sweden 7 7  2  5  14

Add the number

of gold, silver,

and bronze

medals won by

each country to

find the total.

Update your skills. See page 415 XIX.

Multiple Bar Graphs

Objective To read and interpret multiple bar graphs

The bar graph below shows the number of gold, silver, and bronze
medals won by each of five countries in the 2006 Winter Olympics.
The number of gold medals won by each country is what percent
of all the medals won by the same country? For which country
was that percent greatest?

When data fall into categories such as different countries, a bar graph is a good

way to display the data. Use the vertical multiple bar graph to find the ratio

of the number of gold medals won by any given country to the total number

of medals won by that country. Then find and compare the percents.

A multiple bar graph compares related sets of data.

To find the percent of gold medals won by each country:

Find the number of gold medals and the total

number of medals each country won.

Write a ratio expressing the number of gold

medals won to the total number of medals

won by each country.

Divide. Write each ratio as a percent.

Germany: 11 : 29 0.38 38%

USA: 9 : 25  0.36 36%

Austria: 9 : 23 0.39 39%

South Korea: 6 : 11 0.55 55%

Sweden: 7 : 14  0.5 50%

So of the countries shown, the country for which the number of gold medals won

was the greatest percent of all medals won by that country was South Korea.

7

14

6

11

9

23

9

25

11

29

Remember:The bars of a bar graph

can be horizontal or vertical.