Data - Pre-Process Warranty Data
main topics      

An automobile company keeps track of its shipments and warranty returns on a yearly basis. The following tables show the shipments in 2001, 2002, 2003, and 2004 and the warranty returns through 2005, the present time. The two tables below tell the same story—of the 10000 cars shipped in the year 2001, 50 were returned in 2002, 60 in 2003, 100 in 2004, and 300 in 2005 for warranty claims. Similarly, of the 15000 cars sent out in 2002, 78 were returned in 2003, 130 in 2004, and 200 in 2005. The same interpretation holds for the 2003 and 2004 shipments.

If you data are arranged this way in your worksheet, choose Shipment values in a column from Data format in the Pre-Process Warranty Data dialog box.

You can also present the same data as follows:

If you data are arranged this way in your worksheet, choose Shipment values in first row of return columns from Data format in the Pre-Process Warranty Data dialog box.

To analyze warranty data in either of these formats using Warranty Prediction or any parametric distribution analysis techniques, you must use Pre-Process Warranty Data to transform your data to the arbitrarily censored data format.