Question

based on the given data:

1.) What is the centerline of the x-bar chart?

2.) what is the upper control limit of x bar chart?

3.) what is the upper control limit of moving R chart?

4.) Based on the X bar and R charts is the process in control?

Question 1 1 pts Subgroup 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Value 7.09 7.05 7.05 7.07 7.03 7.05 7.03 7.08 7.07 7.04 7.08 7.04 7.06 7.09

Answer 1

1. The centerline of the x-bar chart is 7.05929.

2. The upper control limit of the x-bar chart is 7.07639.

3.) The upper control limit of the moving R chart is 0.1215.

4.) In both the X-bar and R charts, all the observed values are fall within the upper and lower limit of the respective graphs. Hence, the process under control.

Xbar-R Chart of value UAL=7.07639 Sample Mean X-7.05929 Lam7.04218 Sample UQL=0.1215 Sample Range R=0.0727 LOL=0.0238 Sample