Pie Chart Interpretation

What you will be able to do

• Convert a slice between its percentage form and its central-angle form.
• Turn a slice into an absolute value when the pie's total is known.
• Recover the total from one slice's absolute value, then find the others.
• Compare slices across two pies only after converting both to absolute values.

What is inside this lesson

1. 1A pie is a whole split into shares
2. 2Percentage form and degree form
3. 3From a slice to a value, and from a value to the total
4. 4Comparing two pies
5. 5Worked example: an operating-expense pie
6. 6Common mistakes
7. 7Quick revision
8. 8Practice