Question: A. Develop X bar chart and R Chart B. Base on the plotted data points, what comments you can make?

Resistors for electronic circuits are manufactured on a high-speed automated machine. To set up the machine and to create a control chart to be used throughout the run, 5 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows: Sample Obs. 1 Obs. 2 Obs. 3 Obs. 4 10.60 10.40 10.30 9.90 9.98 10.25 10.05 10.23 9.85 9.90 10.20 10.25 10.20 10.10 10.30 9.90 10.30 10.20 10.24 10.50 1 2 4. A. Develop X-bar chart and R Chart B. Based on the plotted data points, what comments you can make? Note: D3 1.88 0 3 1.02 0 0.73 2 D4 3.27 2.57 2.28 2.11 2.00 0.58 6 0.48