Title :
Sample sizes for estimating the Weibull hazard function from censored samples
Author :
Meeker, William Q., Jr. ; Escobar, Luis A. ; Hill, David A.
Author_Institution :
Dept. of Stat. Iowa State Univ., Ames, IA, USA
fDate :
3/1/1992 12:00:00 AM
Abstract :
An important part of planning a life test is the specification of the sample size needed to achieve a specified degree of precision from the experiment. The hazard function is frequently used as a decision criterion, especially in replacement decisions. It is shown how to choose the sample size needed to estimate a point on the hazard function with a specified degree of precision. An easy-to-use graph that can be used with the Weibull distribution and a life test that will be terminated after a pre-specified amount of time are provided. How to apply the methodology with other time-to-failure distributions and other kinds of life tests is described
Keywords :
failure analysis; life testing; reliability theory; statistical analysis; Weibull hazard function; censored samples; decision criterion; life test; reliability; sample size; time-to-failure distributions; Costs; Force measurement; Hazards; Integrated circuit technology; Life testing; Reliability theory; Statistical analysis; Temperature; Time measurement; Weibull distribution;
Journal_Title :
Reliability, IEEE Transactions on
