# Question: Rework Exercises 6 34 and 6 35 using x and s control

Rework Exercises 6.34 and 6.35 using x and s control charts.

The process is out of control on the x chart at subgroup 18. After finding assignable cause, exclude subgroup 18 from control limits calculations:

The process is out of control on the x chart at subgroup 18. After finding assignable cause, exclude subgroup 18 from control limits calculations:

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