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Eight samples have been collected from a manufacturing process that is in statistical control, and the dimension of interest has been measured for each part. It is desired to determine the values of the center, LCL, and UCL for xñand R charts. The calculated xīvalues (units are in mm) are 1.993, 1.602,2.008, 1.602, 1.999, 2.001, 1.602 and 1.997. The calculated R values (mm) are 0.016, 0.022, 0.019,0.023, 0.602, 0.602, 0.016 and 0.012. Also, plot the control chart. Comment on your answer.

Fig: 1