1.

The control limits for a c-chart was reported as the following interval: C + 11.0635 Determine the centreline. Report answer accurate to 1 decimal place. Centreline =A quality analyst selects twenty-two samples of size n = 8 from a process and took measurements. The control limits for the -chart was reported as the following interval: r # 2.7602 Determine R. Table of Control Chart Constants Report answer accurate to 1 decimal place. R =