Question: A Lean Six Sigma team working to reduce the amount of bad debts is tracking the dollar amount of receivables over 90 days past due.
A Lean Six Sigma team working to reduce the amount of bad debts is tracking the dollar amount of receivables over 90 days past due. The team is using an Individuals and Moving Range control chart (XmR or ImR chart). The average balance outstanding (X-bar) is $736,500. The Mean Moving Range is $58,000. What is the upper control limit for the Individuals (X) chart?
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