x Chart Based on Standard Deviations An x chart based on standard deviations (instead of
Chapter 14, Problem 14(choose chapter or problem)
x Chart Based on Standard Deviations An x chart based on standard deviations (instead of ranges) is made by plotting sample means with a centerline at x and control limits at x + A 3 s and x A 3 s , where A 3 is found in Table 142 and s is the mean of the sample standard deviations. Use the data in Table 141 to construct an x chart based on standard deviations. Compare the result to the x chart based on sample ranges (as in Example 5).
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer