Managerial statistics

4. Consider a sample with data values: 10 20 12 17 16 Required a. Compute the coefficient of variation b. Compute the z-score for each of the five observations. 5. The mean income of managers in an organization is $120,000, and the standard deviation is $5,000. The mean income of production workers in the same organization is $45,000, and the standard deviation is $7,000. Required: a. Calculate the coefficient of variation for each group b. What inference could you draw about the relative dispersion (Note: which group is more variable in terms of income?)