JAMB 1983 · UME · Q27

Find the angles of the sectors representing each item in a pie chart of the data 6, 10, 14, 16, 26.

Worked solution (try it first)

Add the data: $6 + 10 + 14 + 16 + 26 = 72$ .
The whole circle is $360^\circ$ , so each unit gets $\frac{360^\circ}{72} = 5^\circ$ .
Multiply each item by 5: $30^\circ, 50^\circ, 70^\circ, 80^\circ, 130^\circ$ , option D.