Construct an r-chart from these data

Reference no: EM131111145

Officials at Mountain Airlines are interested in monitoring the length of time customers must wait in line to check in at their airport counter in Reno, Nevada. In order to develop a control chart. five customers were sampled each day for 20 days. The data, in minutes, are presented next

a. Construct an R-chart from these data.

b. What does the R-chart suggest about the stability of the process? Explain.

Reference no: EM131111145

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