Finding frequencies from a pie chart
Finding frequencies from a pie chart.
- A whole circle is 360°. Each sector represents the same fraction of the angle total and frequency total.
- Angle = frequency ÷ total × 360. Frequency = angle ÷ 360 × total.
- If one sector has both values, use it to recover the total. Check completed frequencies and angles add correctly.
Example 1
The pie chart represents 48 students. Find the frequency in category A.
Example 2
The pie chart represents 72 students. Find the frequency in category B.
Your turn
The pie chart represents 96 students. Find the frequency in category C.
Check answer
The pie chart represents 120 students. Find the frequency in category D.
Check answer
The pie chart represents 144 students. Find the frequency in category A.
Check answer
The pie chart represents 168 students. Find the frequency in category B.
Check answer
The pie chart represents 192 students. Find the frequency in category C.
Check answer
The pie chart represents 96 students. Find the frequency in category C.
The pie chart represents 120 students. Find the frequency in category D.
The pie chart represents 144 students. Find the frequency in category A.
The pie chart represents 168 students. Find the frequency in category B.
The pie chart represents 192 students. Find the frequency in category C.