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.Find control limits for the R chart.

The correct answer is C. 0.02 and 0.33. See the full explanation below for the reasoning.

Control Phase

Question

Options

A0.10 and 0.25
Bnone and 0.33
C0.02 and 0.33
Dnone of the above

How the community answered

(48 responses)

A
2% (1)
B
8% (4)
C
85% (41)
D
4% (2)

Topics

#R chart#control limits#SPC#range chart

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