e - Average mumber of defects per unit UCL,-+zve LCL,--zve,or 0 if less than 0 Use a standard deviation (2) of 3. Sample Number Number of Defects 1. 4. 6. 2. 7. 6. 2. 10 1. What is the value of the Upper Control Limit (UC) for the e-chart? 2. What is the value of the Lower Control Limit (LC) for the c- chart? 3. Is the process in control?

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e - Average number of defects per unit
Se
UCL,-7+zvē
LCL,-- zvē,or 0 if less than 0
Use a standard deviation (2) of 3.
Sample Number
Number of Defects
2
6.
4.
6.
7.
2
10
1. What is the value of the Upper Control Limit (UCL) for the c-chart?
2. What is the value of the Lower Control Limit (LCI) for the c- chart?
3. Is the process in control?
4 Use the UCL and the LCL calculated using Samples 1 through 10. Now suppose that there are 12 defects in the next
sample (Sample 1). without recalculating the control limits, would the process be in control?
Answers
Transcribed Image Text:e - Average number of defects per unit Se UCL,-7+zvē LCL,-- zvē,or 0 if less than 0 Use a standard deviation (2) of 3. Sample Number Number of Defects 2 6. 4. 6. 7. 2 10 1. What is the value of the Upper Control Limit (UCL) for the c-chart? 2. What is the value of the Lower Control Limit (LCI) for the c- chart? 3. Is the process in control? 4 Use the UCL and the LCL calculated using Samples 1 through 10. Now suppose that there are 12 defects in the next sample (Sample 1). without recalculating the control limits, would the process be in control? Answers
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