ECZ · Paper 1 — Statistics
The cumulative frequency curve shows the ages of the 80 members of a club. Use the curve to estimate how many members are aged 30 years or less.
- A. 20
- B. 26
- C. 30
- D. 50
Verified working — step 1
Reading up from 30 years on the age axis to the curve and across to …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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