Mathematics 4024 · O Level · Cumulative frequency diagrams
Cumulative frequency diagrams — practice question
The cumulative frequency graph indicates the amount of fuel, $f$ litres, purchased by 100 customers at a service station on one day.
(a(i))[1]
Estimate the median from the diagram.
(a(ii))[2]
Estimate the interquartile range from the diagram.
(b)[3]
On that day, the service station charged $\$1.75$ for one litre of fuel. Use the diagram to find the fraction of customers who spent more than $\$91.00$ on fuel.
(c)[2]
Complete the frequency table for the amount of fuel purchased by these 100 customers.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “28–30” …