# Types of Graphs By: Mrs. Mowery.

## Presentation on theme: "Types of Graphs By: Mrs. Mowery."— Presentation transcript:

Types of Graphs By: Mrs. Mowery

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

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

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.

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.

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.

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

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

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

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

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

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

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

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

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

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

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.

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