Stat > Reliability/Survival > Distribution Analysis (Arbitrary Censoring) > Nonparametric Distribution Analysis
Use this command when you have arbitrarily censored data or actual failure times and no distribution fits your data. You can estimate survival probabilities, cumulative failure probabilities, hazard estimates, and other functions, and draw survival and hazard plots. You can request Turnbull or Actuarial estimates.
If a distribution fits your data, use Parametric Distribution Analysis (Arbitrary Censoring).
Start variables: Enter the columns of start times. You can enter up to 50 columns (50 different samples).
End variables: Enter the columns of end times. You can enter up to 50 columns (50 different samples).
Frequency columns (optional): Enter the columns of frequency data.
By variable: If all of the samples are stacked in one column, check By variable, and enter a column of grouping indicators in the box.