Comment on the X(bar) and R chart.

5. The following data were obtained over a 5 day period to indicate X and R control chart for a quality characteristic of a certain manufacturing product that had required a substantial amount of rework. All the figures apply to the product made on a single machine by a single operator. The sample size was 5. Two samples were taken per day. Comment on the process using X and R charts. Sample Observations Number 2 3 4 5 12 13 10 10 10 11 9 12 y 12 10 Assignman 10 8 11 11 11 10 7 10 10 11 13 13 12 10 11 11 10 12 13 11 12 11 13 9 12