ECZ 2015 · O-Level Paper 2 · Question 9 — Statistics

Answer the whole of this question on a sheet of graph paper. On a particular day, a tuck shop owner recorded the expenditure of 350 boys and the results were as shown in the table below. Amount K | 10<x≤20 | 20<x≤30 | 30<x≤40 | 40<x≤50 | 50<x≤60 | 60<x≤70 | 70<x≤80 | 80<x≤90 | 90<x≤100Number of boys | 20 | 50 | 55 | 70 | 60 | 45 | 35 | 10 | 5

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.

Have a different question?

Search it — if it is from a past paper or a school mock, chances are we have it worked out, or one that uses the same method.