Question: In a training scheme for young people, the average time taken for each age group to reach a certain level of proficiency was measured. The

In a training scheme for young people, the average time taken for each age group to reach a certain level of proficiency was measured. The data are shown in the table. Age x (years) 16 17 18 19 20 21 22 23 24 25 Average time y (hours) 12 11 10 9 11 8 9 7 6 8 a Find S... S., and Sy b Use your answers to calculate the product moment correlation coefficient (r). e Describe and interpret the relationship between average time and age.

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