Collecting Data
Lesson
Topic Index | Grade 3 Math | Elementary Test Prep | StudyZone

Graphs display data so that it can be easily understood. You can use graphs to compare sets of data.

The following data is displayed in a table, and then in different types of graphs.

The students in Mrs. Carroll's class surveyed the school parking lot and made a graph to compare the data.

Cars in the School Parking Lot
Color Number
Silver 12
Blue 8
White 5
Black 10
Red 7
Other 15

The data was organized in a table  making it easier to read and interpret. The data from the table can be used to create the following bar graph and pictograph.

 

A bar graph is a graph that uses bars to show data.

 

A pictograph uses pictures or symbols to represent different numbers of the same item. The key tells how many each symbol stands for.

Cars In The School Parking Lot

Cars   Number
silver  12
blue     8
white   5
black   10
red     7
other 15

Key: Each  = 2 cars
      
 Each    =  1 car

 

Students read a magazine poll on favorite sports for boys. The article surveyed fifty 6th graders and asked them what was their favorite sport. The data was organized in the table below.

Favorite Sport

Football 12
Baseball 6
Hockey 15
Soccer 8
Basketball 9

 

The data from the table was used to create a bar graph. A bar graph uses bars to show data.

Click on the car for practice.

Remember:

 Bar graphs are useful in making comparisons. The
greatest and least quantities are represented
by the longest and shortest bars.

 
Topic Index | Grade 3 Math | Elementary Test Prep | StudyZone

Created by Carol Carroll
Updated by Pat Delia
Copyright 2001-06 Oswego City School District