Sample Item 1 1 2 3 4 5 6.1 6.35 5.85 6 6.15 item 2 item 3 Item 4 Item 5 6.15 5.35 5.98 5.95 6.02 6.2 6.1 5.7 5.9 6.2 6.12 6.08 5.8 5.7 6.04 6.17 5.6 6.25 5.99 6.01 Xbar R 5.906 6.074 6.03 5.942 6 5.9904 Average R Chart D3 D4 UCL = X-double bar +A2* Rbar = LCL =X doublebar - A2 * R bar = A2 n= 0.8 0.65 0.35 0.47 0.65 0.584 0.5777 5 R Chart 6.4 1.4 6.2 1.2 6 1 0.8 5.8 0.6 5.6 0.4 5.4 0.2 0 1 2 Column I 3 Column M 4 Column N 5 Column O 5.2 1 2 Column H Xbar LCL CL 5.653023 5.653023 5.653023 5.653023 5.653023 5.9904 5.9904 5.9904 5.9904 5.9904 UCL 6.327777 6.327777 6.327777 6.327777 6.327777 R Chart LCL CL 0 0 0 0 0 0.584 0.584 0.584 0.584 0.584 UCL 1.234576 1.234576 1.234576 1.234576 1.234576 0 2.114 X Bar Chart 6.4 6.2 6 5.8 5.6 5.4 5.2 1 2 Column H 3 Column J 4 Column K 5 Column L Frequency (number of times) Items damaged when received 21 Parts missing 13 Literature not in the box 9 Call went to voice mail 8 Delivery was late 3 Unit not working 2 Type of Problem Cummlative Cummalative% 21 38% 34 61% 43 77% 51 91% 54 96% 56 100% 56 Chart Title 25 20 15 10 5 0 120% 100% 80% 60% 40% 20% 0% Frequency (number of times) Cummalative% 120% 100% 80% 60% 40% 20% 0%