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A-Level MathematicsYear 2021Q1

2 Answer ALL questions. Write your answers in the spaces provided. 1 Surveys of whales were made in the Southern Ocean between 1995 and 2004. Figure 1 shows results from these surveys for the total number of sightings of individuals of three different whale species in the months of January to April. Month January J February F March M April A Total Type of whale Orca C 190 203 89 12 494 Fin whale W 45 133 33 0 211 Long-finned pilot whale L 234 150 240 100 724 Total 469 486 362 112 1429 (Data source: http://ipt.obis.org/nonode/resource?r=whale_survey) Figure 1 J denotes the event ‘sighting of whale was in January’. F denotes the event ‘sighting of whale was in February’. M denotes the event ‘sighting of whale was in March’. A denotes the event ‘sighting of whale was in April’. C denotes the event ‘the whale sighted was an orca’. W denotes the event ‘the whale sighted was a fin whale’. L denotes the event ‘the whale sighted was a long-finned pilot whale’.

Paper Source:9ST0_03_que_20211023.pdf

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Exam Specification Info

This question is part of the UK A-Level Mathematics syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.

Syllabus levelAdvanced Level (A-Level)
SubjectMathematics
Official MarksVariable (2–6 marks)