Twelve samples, each containing five parts, were taken from aprocess that produces steel rods. The length of each rod in thesamples was determined. The results were tabulated and sample meansand ranges were computed. The results were: Sample Sample Mean(in.) Range (in.) 1 10.002 0.011 2 10.002 0.014 3 9.991 0.007 410.006 0.022 5 9.997 0.013 6 9.999 0.012 7 10.001 0.008 8 10.0050.013 9 9.995 0.004 10 10.001 0.011 11 10.001 0.014 12 10.006 0.009a) Determine the upper and lower control limits and the overallmeans for -charts and R-charts. the answer states an equation usingnumbers i know how to get except .577 how did you get the .577
