The following list gives the number of defects found in 30 samples of 100 electronic assemblies taken on a daily basis over one month. Plot these data on a run chart, computing the average value (center line). How do you interpret the chart? Samples 1-10 Samples 11-20 3 3 7 4 4 5 7 352 6 15 5 2 1 7 1 1 6 Samples 21-30 27 13 12 7 7 4 3 3 6 A. 15 14 13 12 11 10 9 8- 6 5 4+ 3- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 B. 15 14 13 12 11 10 9. 8- 7 6 5 J 3+ -2- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 C. 15 14 13 12 11+ 10 9. 8- 6+ 5 m N 1 N 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 D. 15 14 13 12 11+ 10 9 8 71 6- 4 1 2 3 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30