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jok3333 [9.3K]
2 years ago
10

For a process, the average range for all samples was 5 and the process average was 25. If the sample size was 10, calculate UCL

for the R-chart.
Mathematics
1 answer:
alexira [117]2 years ago
7 0

Answer:

8.885

Step-by-step explanation:

Given that :

Sample size, n = 10

The average range, Rbar for all samples = 5

The upper control limit, UCL for the R-chart is :

UCL L= D4Rbar

From the control chart constant table, D4 = 1.777

Hence,

UCL = 1.777 * 5

UCL = 8.885

The UCL for the R-chart is 8.885

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