Table 6 Summary of project improvement...

Table 6

Summary of project improvement for the customer service process

Service time	Min	Max	Range	Mean	SD	CV	PPM	Yield
Before improvement	3	28	25	11.065	5.547	50.14	165386.2	83.46
After improvement	3	16	13	8.035	3.144	39.13	7470.67	99.25
Change Percent				−0.2735	−0.4332	−0.2196	−0.9548	0.158

Service time	Min	Max	Range	Mean	SD	CV	PPM	Yield
Before improvement	3	28	25	11.065	5.547	50.14	165386.2	83.46
After improvement	3	16	13	8.035	3.144	39.13	7470.67	99.25
Change Percent				−0.2735	−0.4332	−0.2196	−0.9548	0.158

Source(s): Authors' own creation

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