# Accession Number:

## AD0293155

# Title:

## FORTRAN PROGRAM TO ESTIMATE CUMULATIVE SURVIVAL PROBABILITY AND VARIANCE

# Descriptive Note:

# Corporate Author:

## CENTER FOR NAVAL ANALYSES WASHINGTON D C OPERATIONS EVALUATION GROUP

# Personal Author(s):

# Report Date:

## 1962-10-31

# Pagination or Media Count:

## 1.0

# Abstract:

A computer program was devised to examine he survival times of test lements to estimate survival probability as a function of time. Input quantities consist of 1 ages of elements at start of test, 2 ages of elements at times of failure, and 3 ages of elements when withdrawn from test prior to failure. The principal output qua tities are 1 the expected value of survival probability at the age ASSOCIATED WITH EACH OBSERVED FAILURE, AND 2 the variance and standard deviation a sociated with each probability estimate. The use of elements from truncated tests serves to take advantage of the largest possible sample size for a given time period without introducing a biased survivability estimate. Author