Question

We are establishing a quality control program for a process and need to establish the mean and standard deviation for the process. The first 10 batches had samples of size 5 taken, and the following data were recorded. 负43.3 2.53 45.7 1.85 42.8 1.96 4 46.2 2.70 43.5 3.11 6 42.6 2.59 44.6 1.95 47.02.36 46.6 1.90 43.3 2.94 Based on this information, where should the center line for the x chart be? 44.56 0 44.3

Answer 1

The center line for the chart is

The formula to find is

= Sum of all / Total number of batches

Therefore, based on the information the center line for the should be 44.56