The following data gives the information on the ages (in years) and the number of breakdowns during the past month for a sample of 7 machines at a large industrial company. Age (X) 12 7 2 8 13 9 4 Number of breakdowns (Y) 9 5 1 4 11 7 2 (a) Draw a scatter diagram to represent the above data. (b) Calculate the value of Pearson’s correlation coefficient r. Interpret the value of r. (c) Calculate coefficient of determination. Interpret your answer.

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