Consider the x-chart shown below. a. Is the process affected by special causes of variation only, common

Consider the xÌ…-chart shown below.

a. Is the process affected by special causes of variation only, common causes of variation only, or both? Explain.
b. The means for the next five samples in the process are 27, 29, 32, 36, and 34. Plot these points on an extended xÌ…-chart. What does the pattern suggest about the process?

Transcribed Image Text:

35 UCL 30 25 20 15 10 LCL 10 15 20 25 Sample number