An integral estimate method for censored data or incomplete data of valuable products is presented. Combining the results of simulation or digital design and censored data or incomplete data

it can totally infer the censored data or the incomplete data in multi-state (for multi-population).And then

in each state

it can derive the estimators of the location and the scale parameter

and the confidence limits and intervals of population percentiles.Compared with traditional method

this presented method not only has higher precision but also solves the problem of reliability assessment with very small sample.Another method is also presented

which can test the results of simulation or digital design with censored data or incomplete data.