In this example from Nelson (1990, p. 147), microprocessor units are tested and inspected at various times and the failed units are counted. Missing values in one of the columns indicate that you do not know the lower or upper limit, and therefore the event is left or right censored, respectively.
1.
Select Help > Sample Data Library and open Reliability/Microprocessor Data.jmp.
2.
Select Analyze > Reliability and Survival > Survival.
3.
Select start time and end time and click Y, Time to Event.
4.
Select count and click Freq.
5.
Select the check box next to Plot Failure instead of Survival.
6.
Figure 12.14 Interval Censoring Output

Help created on 7/12/2018