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Researchers at the European Centre for road Safety Testing are trying to find out how the age of cars affects their braking capability. They test a group of ten cars of differing ages and find out the minimum stopping distances that the cars can achieve. The results are set out in the table below: Car Age (months) Minimum Stopping at 40 kilometres per hour (metres) A 9 28.4 B 15 29.3 C 24 37.6 D 30 36.2 E 38 36.5 F 46 35.3 G 53 36.2 H 60 44.1 I 64 44.8 J 76 47.2 Using information provided above to answer the following questions: 2.1 Draw a scatter diagram from the data. (11) 2.2 Compute Spearman’s correlation coefficient (rho) (12) 2.3 Compute Pearson’s correlation coefficient(r)
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