The cumulative frequency graph shows the speed of $50$ vehicles passing by a narrow road within \(

Question

The cumulative frequency graph shows the speed of $50$ vehicles passing by a narrow road within $5$ minutes. If $8\%$ of the $50$ vehicles received a speeding ticket, find the speed limit on this road. [1] Find the interquartile range of the speed of the vehicles. [2] It was said that more than $50\%$ of the vehicles are travelling at $45$ km/h when passing through the narrow road. Explain, with reason, whether you agree with the statement. [1]

Accepted Answer

(a) $60$ km/h (b) $18$ or $19$ (c) Disagree $50\%$ of the vehicles are travelling slower than $44$ km/h

(E Math) 2025 CCHY P1 Q17

(E Math) 2025 CCHY P1 Q17