Situation In one company, production downtime was an ongoing problem so the corporate office decided to implement consistent tracking of downtime in order to know the real situation. Patrick was asked to develop a measure of downtime to use throughout the organization. The production process consisted of 3 sequential steps and was virtually identical in all locations. Patrick wanted the amount of downtime and the reason recorded on a sheet of paper for each step of the process. These values were added to get the total downtime each day. This was eventually expressed as a percent of the working day and given to the plant manager. Available data In the table, Data on Downtime, we have data collected according to Patrick’s instructions for 10 days from Plant 15. The number of minutes of downtime in each of the three steps of the process is given along with the total. Also, the length of the working day is given. Questions 1. How should these data be analyzed before they are presented to the plant manager? 2. Is there anything unusual about these data? 3. What additional information is needed to be comfortable with the analysis?
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