A-LevelMathematicsProbability and statisticsOct/Nov 2024Paper 5 Q38 Marks
The time taken, in minutes, to walk to school was recorded for 200 pupils at a certain school. These times are summarised in the following table. Time taken (t minutes) | t ≤ 15 | t < 25 | t ≤ 30 | t ≤ 40 | t ≤ 50 | t ≤ 70 --------------|--------|--------|--------|--------|--------|-------- Cumulative frequency | 18 | 46 | 88 | 140 | 176 | 200
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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