Transcript circlegraph3.20.13 - Gallatin Gateway School

A graph made of a circle
divided into sectors. Also
called pie graph.
GLE 0406.5.1
0406.5.2
SPI 0406.5.1
Parts of a Circle Graph
Graph Title – the title tells what the graph is representing.
Sectors – Each sector is one part of the whole circle.
Sector Labels – Each label tells what the sector represents.
The Perfect Pizza
55% cheese
15% sauce
30% pepperoni
How to make a circle graph
1. Using a compass, draw a circle large enough to show all
of your data.
2. Determine how many sectors you will need in your
graph. You will need to know the percentages of the
whole of your data. Try to make the sector sizes look as
close to the percentage of the circle as the percentage
of your data.
3. Label each sector and give your graph a title.
Survey your classroom for cafeteria favorites. Choose four
different lunches and gather the data. Make a table to
show data.
Pizza
10
Chicken
8
Spaghetti 5
Fish
2
You must now change the numbers to percentages. To do
this, change each number to a fraction.
10/25
8/25
5/25
2/25
Then divide the numerator by the denominator.
10/25=.40
8/25=.32
5/25=.20
2/25=.08
Then multiply the answer by 100
.40*100=40%
.32*100=32%
.20*100=20%
.08*100=8%
Now you are ready to draw your circle graph.
First you will need to divide your circle into approximate sectors
to represent each percentage. Label each sector with the
appropriate name and percentage.
Chicken 32%
Pizza 40%
Spaghetti 20%
Fish 8%
Finally, give your graph a title.
Favorite Lunch Foods
Chicken 32%
Pizza 40%
Spaghetti 20%
Fish 8%