Question No.9 For Business Statistics

9. The following data represent the ages in years of a sample of 25 volunteers from a charitable organization: 31, 43, 56, 23, 49, 42, 33, 61, 44, 28, 48, 38, 44, 35, 40, 64, 52, 42, 47, 39, 53, 27, 36, 35, and 20. a) Compute the sample variance and sample standard deviation, and express the numbers in the appropriate units (2 points). b) Compute the range of the data and express the number in the appropriate unit (2 points). c) Compute the coefficient of variation and express the number in the appropriate unit (2 points).