4-27 Double Bar Graph

A bar graph is a graph that uses bars to show data.  Every bar graph has a Title at the top that tells you what the graph is about.  A bar graph also has a Scale, which are the numbers listed on one axis, or side, of the graph.  The other axis, or side, of the graph has words.  Bar length is important.  The highest or longest bar has the most.  The smallest or shortest bar has the least or fewest.

Bar graphs may be vertical or horizontal.  Vertical means the bars go up and down.  Horizontal means the bars go across.  In the bar graph below you will see two different colored bars.  This is called a double bar graph.  Double bar graphs are used for comparing data.

Look at the double bar graph below and answer the questions that follow.

1.  How many votes were there in Mrs. Wright's Class for Country music?

2.  How many votes were there in Mr. Mann's Class for Country music? 

3.  How many votes were there in Mrs. Wright's Class for Rock music?

4.  How many votes were there in Mr. Mann's Class for Rock music?

5.  How many more students in Mr. Mann's Class preferred Rhythm & Blues (R & B) music than in Mrs. Wright's Class?

6.  How many more students in Mrs. Wright's Class preferred Rap music than in Mr. Mann's Class?

7.  What was the most popular genre of music for Mr. Mann's Class?

8.  What was the most popular genre of music for Mrs. Wright's Class?

9.  Which genre of music received the fewest number of votes in Mr. Mann's
Class?

10.  What is the Title of the graph?

Type of Music

Number of Votes

Favorite Music Genre

11.  What is the Scale part of the graph?

Type of Music

Number of Votes

Favorite Music Genre

12.  What kind of graph is the graph above?

Horizontal Bar Graph

Horizontal Double Bar Graph

Vertical Double Bar Graph

Vertical Bar Graph