1. Types of Graphs
By: Mrs. Mowery

2. Histograms Definition --
Histogram is a special type of bar graph that uses intervals of equal size.

3. Amount of Books Read by 6th Grade Students

4. Think about it…
When would you need to create a histogram?

5. You could use a histogram to compare…
The number of siblings a person has.
The number of books read.
The number of CD’s someone owns.
The amount of pets someone has.
The amount of money someone earns.

6. Steps for Creating a Histogram
Step 1: Create your Survey
Decide what you are going Survey or Chart.
Record the data.
Remember you need to survey something that can use intervals.

7. Steps for Creating a Histogram
Step 2: Gather Data
Divide the Data into equal sized intervals.
Create a frequency table. Record tallies and count the frequency.

8. Number of CDs
Number of People
(Tally)
Frequency
0-5 4
6-10
1 1 1 3
11-15

9. Steps for Creating a Histogram
Step 3:Draw your histogram.
Choose a vertical scale.
Title the graph
Label the horizontal axis and vertical axis.

10. Circle Graph Definition:
Circle Graph is a graph in the shape of a circle that shows fractions/ percents.
It is used to compare part to whole.
Also known as the Pie Chart

11. Think about…
When would you need to create a circle graph?

12. You could use a circle graph to compare/ show…
Favorite team sport
Favorite flavor of ice cream
How you spend the hours of a day
Monthly budget percentages

13. Steps for Creating a Circle Graph
Step 1 : Create your Survey
Decide what you are going to survey
Make sure it is something that compares part to whole

14. Steps for Creating a Circle Graph
Step 2: Gather Data
Create a frequency table that includes: Choices, Fraction, Decimal, and Percents

15. Favorite
Team
Fraction
Decimal
Percent
Bengal
12/20
0.60
60%
Browns
8/20
0.40
40%

16. To go from a fraction to a decimal-
Divide the numerator by the denominator.
Example:
12 /

17. To go from a decimal to a percent- Multiply by 100.
Ex: x 100 = 60 %

18. Steps for Creating a Circle Graph
Step 3: Draw your circle graph
Place a dot in the center.
Estimate the fraction to shade.
Include labels, percents, and an appropriate title.

19. Hints on Drawing a circle graph.
Draw a dot in the center of the circle.
Start with the easiest percent to graph.
Ex: 25% = 1/4, 50% = 1/2, 75% = 3/4
Ex: 33% = 1/3, 67% = 2/3