BAR GRAPHS
Using data to make graphs
WHAT IS DATA? It is information.
An example:
In my fifth grade class we took a pizza lovers survey.
We learned that ten kids liked pepperoni pizza best.
Nine kids liked sausage pizza best.
Seven kids liked cheese pizza best.
This information is called
DATA.
If a mom was planning a pizza party for the class,
she would need the pizza lovers survey DATA.
I need to order 10 pepperoni, 9 sausage and 7
cheese pizzas.
Your report card is another example of data.
Math: 88%
Reading: 94%
My Language Arts
teacher may not like
me.
Science: 75%
Social Studies: 80%
Language Arts: 55%
WE USE GRAPHS TO ORGANIZE DATA.
100
90
80
70
60
50
40
30
20
10
0
Math
Reading
Sci
SS
L. Arts
I know my
parents will want
to talk to my
Language Arts
teacher.
A CHALLENGE.
60
50
40
Feet
30
20
10
0
Which bar on the graph
represents 45 feet?
THIS IS THE INFORMATION OR DATA…AND
WHAT ABOUT THE GRAPH?
Chickens rule!
Animals on the farm
Cows
124
Chickens
450
Turkeys
388
Horses
56
Mules
110
DATA WITH A GRAPH.
Animals on the farm
500
Cows
124
400
Chickens
450
300
Turkeys
388
Horses
56
Mules
110
200
100
0
Cows
Chickens
Turkeys
Horses
Mules
KIDS HAVE PETS:
Salomon asked the kids in his class what kind of pet they have.
This is the data he collected.
Building a bar graph using this data helps us easily compare the number
of pets kids have. All four (4) parts of a bar graph must be present for the
graph to be complete.
Title
Scale
Bars
Labels
ANSWER THE QUESTIONS
1. which animal most kids have as pets?.
2. Which two kinds of animals are owned by the same number of kids?
3. How many kids have either a dog or a cat?
4. The numbers up the side of the bar graph are called the ________.
HOW CAN YOU COLLECT THE INFORMATION
NEEDED TO CONSTRUCT A BAR CHART?
BY MAKING A FREQUENCY
TABLE FIRST!
A Frequency table is a table that lists each item in
a data set with the number of times it occurs.
YOUR TURN!

1. Ask 10 students the following information and
complete the table.
FLAVOUR
TALLY
Chicken
Cheese
Mayonnaise
Barbeque
Bacon
Insert any other flavours here
2. Construct your own frequency table
CRISPS
TALLY
FREQUENCY
3. Make a a bar graph showing the favourite crisps in
our class.