Heather Pinkston

Statistical Process Control

For this lab a total of 25 shafts were measured four times each using a 6mm micrometer. This data was then converted into X bar and R bar charts for the control charts. The grouped data was then convered into a frequency chart with a normal curve. Because all data was collected using a 6mm micrometer the data shown on the control charts represents the value after. For example reading subgroup 1, x1 should be considered 6.35. Below is a PDF outline of the procedure and data collected, as well as a excel file with the original data.