Circle graph - shows how the parts of a set of data compare with the whole set of data
Here is an example to work through and try!!
Example: I asked 100 people what is your favorite color.
To draw a circle graph:
Step 1: Create a table like the one below (if it is not already given to you).
Step 2: Write each number as a fraction of the sum of the numbers in the data
Step 3: Write each fraction as a percent (this is easy for this example since the denominator is already 100)
Step 4: Write each fraction as a decimal, then multiply by 360o to find the size of each angle needed for the sectors
Step 5: Use your protractor to draw the angles in a circle like the one below. You can either draw your own circle or your teacher can provide you with a copy of it. Start by drawing the radius of this circle. Try it on your own! If you need help see your teacher the next class.
NOTE: GO BACK TO REVIEW HOW TO USE A PROTRACTOR AT THE BEGINNING OF THIS UNIT (VIDEO 1)