Western shipping center data for March (Minitab worksheet)

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 for Minitab Statistical Software.

A team at the shipping center in the western region collects data on orders and arrivals.

Worksheet column Description
Date The date of delivery for an order
Days The difference between the arrival and order dates for the order
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