Collect sample data for crew over next two weeks, determine X-bar range and compare these to industry 90 seconds customer service target.
Quality control charts like the x-bar and R-chart are employed to keep track of a process' mean and variation using samples gathered over a predetermined period of time.
In order to track the mean and variation of the process moving forward, control limits are applied to both chats.
When a point exceeds the control limits, it means that the process' mean or variation is out of control; assignable causes may now be suspected.
The grand mean and the control limits are displayed on the y-axis of the x-bar chart, while the sample group is displayed on the x-axis.
To know more about X-bar, visit:
https://brainly.com/question/14989718
#SPJ4
