SAMPLE MEAN AVE. RANGE SAMPLE (inches) ( (inches) 1 10.002 0.011 2 10.002 0.014 3 9.991 0.007 4 10.006 0.022 5 9.997 0.013 9.999 0.012 7 10.001 0.008 10.005 0.013 9 9.995 0.004 10 10.001 0.011 11 10.001 0.014 12 10.006 0.009 CHAPTER 6 - TECHNICAL CASE TWELVE SAMPLES, EACH SAMPLE CONSISTING OF FIVE PARTS IN THE SAMPLE SUBGROUP, WERE TAKEN FROM A PROCESS THAT PRODUCES STEEL RODS AT KODZI'S FACTORY. THE LENGTH OF EACH ROD IN THE SAMPLE SUBGROUP WAS DETERMINED. THE RESULTS WERE TABULATED AND THE SAMPLE MEANS AND AVERAGE RANGES WERE COMPUTED FOR EACH SAMPLE SUBGROUP THESE ARE THE RESULTS YOU, AS THE PROCESS ENGINEER, MUST WRITE UP THE ANSWERS TO THE FOLLOWING IN A ONE PAGE SUMMARY AND ON THE SECOND PAGE DRAW BOTH THEX BAY AND R CHARTS TO HELP ANSWER THE QUESTIONS SHOWN BELOW: 1 What type of chart is being used and why 2. Determine the oper and lower controllimits and the overall means for both X Bar Charts and R Bar Charts 3. Draw the charts and plot the values of the sample means and ranges 4. Does the data indicate a process that is in control Why or why not? MIND: The formation needed to complete the charts is in the Power Point for Chapter 6, the handout in the Module for Chopter 6, and the Supplement 6 In the text