ASQ
CSSBB · Question #67
A set of data from a process has 8 readings per sample and 50 samples. The mean of the 50 sample means is 12.62. The mean of the 50 ranges is 0.18.A customer requires that SPC charts be done on…
The correct answer is D. smaller. See the full explanation below for the reasoning.
Control Phase
Question
A set of data from a process has 8 readings per sample and 50 samples. The mean of the 50 sample means is 12.62. The mean of the 50 ranges is 0.18.A customer requires that SPC charts be done on their forms which have spaces for only 5 readings per sample. In preparation for calculating the new control limits the following question is asked, "Will the new average range be larger or smaller than the current average range?". The answer is:
Options
- Ayes
- Bno
- Cmaybe
- Dsmaller
- Elarger
- Fsame size
- Gnone of the above
How the community answered
(56 responses)- A2% (1)
- C11% (6)
- D77% (43)
- E4% (2)
- G7% (4)
Topics
#SPC#sample size effect#average range#subgroup size
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