A company has roughly the same number of people in each of fivc departments: Production, Sales, R&D, Maintenance, and Administration. The following table lists the number and type of major injuries that occurred in each departmcnt last year.

a. Construct a Pareto diagram to identify which department or departments have the worst safety record.

b. Explodc the Pareto diagram of part a to identify the most prevalent type of injury in the department with the worst safety record.