The department of transportation in a state government has four vehicle registration offices in a metropolitan area. The department recently conducted a series of studies to determine the number of mistakes made in issuing or renewing driver's licenses (an outcome measure). Twelve tests were conducted in each of these four offices, and the results are shown in table
1.Calculate the mean, the sample variance, the sample standard deviation, the maximum, the minimum, and the range for each office. Discuss the meaning of each of these performance measures for the offices.
2.Which office has the best performance, based on these measures? Which has the worst? What makes you draw these conclusions? If the state decides to retrain offices one at a time, what would be your priority list for retraining? Explain your rationale for creating this list.
3.Calculate the frequency and cumulative distributions for the number of errors for each office. Let's say that the department's goal is for at least 50 percent of each office's tests to find no more than five errors. Which office or offices meet this performance benchmark, and which don't? Explain your findings.
Table W/9. 7~`- Number of Errors in Vehicle License Offices( per 100 Licenses Issued )Office AOffice BOffice COffice DTest !3. 006. 009. 009. 00Test 27. 003. 004. 009.00Test 38. 002. 002. 007. 00Test 45. 005. 002.006.00Test 55. 002. 006. 004. 00Test 65. 009. 002. 001. 00Test 71. 006. 0010. 002.00Test 89.004. 005. 009.00Test 910. 008. 006. 0010. 00Test 105. 002. 007. 004. 00Test 1 13. 002.007. 001. 00Test 124. 001. 008. 002. 00
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