Select the option that best describes your data.
Complete the following steps if your data indicate the exact time that each item failed or was retired from service.
You cannot specify the number of systems if you have exact data. The number of systems can only be specified with interval data.
Complete the following steps if your data indicate only that the item failed or was retired from service between two specific times.
If you select this option, you must also enter a Cost/Frequency column to indicate the total number or failures (number of events) or the total cost of failures for the systems within each interval. For more information, go to Specify repair cost or frequency for Nonparametric Growth Curve.