The control limits for the

3-sigma

R-chart are:

Upper Control Limit

(UCLR)

=

nothing

inches (round your response to four decimal places).

I ASO NEED LCLr

Refer to Table 56.1 - Factors for Computing Control Chart Limits (3 sigma) for this problem. Twelve samples, each containing five parts, were taken from a process that produces steel rods at Emmanual Kodzi's factory. The length of each rod in the samples was determined. The results were tabulated and sample means and ranges were computed. The results were: Sample 1 2 Sample Mean (in.) 14.404 14.402 14.391 14.404 14.397 14.399 3 4 Range (in.) Sample Sample Mean (in.) Range (in.) 0.044 7 14.403 0.021 0.051 8 14.403 0.058 0.042 9 14.393 0.039 0.037 10 14.403 0.038 0.048 11 14.403 0.054 0.053 12 14.408 0.061 5 6 For the given data, the x = 14.4008 inches (round your response to four decimal places). Based on the sampling done, the control limits for 3-sigma x chart are: Upper Control Limit (UCL;) = 14.4271 inches (round your response to four decimal places). Lower Control Limit (LCL;) = 14.3745 inches (round your response to four decimal places). Based on the x-chart, is one or more samples beyond the control limits? No. For the given data, the R = 0.0455 inches (round your response to four decimal places). The control limits for the 3-sigma R-chart are: Upper Control Limit (UCLR) = inches (round your response to four decimal places)