A company that sells books online has three regional shipping centers. Each shipping center uses a different computer system to enter and process orders. The company wants to identify the most efficient computer system and to use that computer system at each shipping center. You can use this data to demonstrate Xbar-S Chart and Normal Capability Analysis, as in Chapter 4 of Getting Started.
A team at the shipping center in the western region collects data on orders and arrivals.
|Date||The date of delivery for an order|
|Days||The difference between the arrival and order dates for the order|