Managerial statistics

Assignment #2 - Managerial Statistics (16:250) 3. Given the following data: 135 128 136 78 116 77 111 79 44 97 116 123 88 102 26 82 156 133 107 35 112 98 45 122 125 Required a. Find the range? b. What is the variance and standard deviation? c. What is the interquartile range? d. What is the lower limit? e. What is the upper limit? f. Are there outliers?? 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?)