The director of the pharmacy department is interested in benchmarking the level of operations in the unit. The director has defined medication errors as being any one of the following: wrong medication; wrong dose; administered to the wrong patient; administered at the wrong time; incorrectly repeating the medication; or omitting the medication. The number of orders filled per day by the pharmacy varies. Table 8-24 shows the number of orders filled and the number of medication errors for 25 days. Construct an appropriate control chart and comment on the stability of the process.
TABLE 8-24

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Number of Medication Errors Number of Sample Number Number of Medication Errors Sample Number Number of Orders 15 0