Find the control limits for the R-chart with = 0.02 and sample size of 15. A)LCL = 0.007 and UCL = 0.033 B)LCL = 0.004 and UCL = 0.004 C)LCL = 0.003 and UCL = 0.007 D)The R is too small to determine control limits.

Question

Quizplus · Accepted Answer

The control limits for the R-chart are:
LCL = D3*S1U1B0 = 0.007
UCL = D4*S1U1B0 = 0.033

where D3=0 and D4=2.282 (for a sample size of 15). Therefore, the answer is A.

Find the Control Limits for the R-Chart With