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发帖数: 100 | 1 I need to calculate Shewhart Control Charts for sample size larger than 25.
Could anyone tell me how to calculate factor d2 and d3? All I can find is
from the factor table, however it only provides me the value up to sample
size 25.
I am going crazy now!
Can anybody tell me? thank you a millions time. | y**********l
发帖数: 19 | 2 I have a table with d2 upto N=50. I am confused with d3. Do you mean D3, the
constant for lower control limit of R chart or something else? |
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