Question: a) What is the difference between an UCL and a USL, as discussed in class? b) What does a range chart show you that you

a) What is the difference between an UCL and a USL, as discussed in class? b) What does a range chart show you that you may not see in a chart plotting averages? c) Read the story in the graph below. What concerns might you have? What actions (if any) should be taken
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