JEDEC JESD37A PDF

JEDEC JESD37A – Lognormal Analysis of Uncensored Data, and of Singly Right-Censored Data Utilizing the Persson and Rootzen Method

This standard enables the user to estimate the parameters of a two-parameter lognormaldistribution from complete or singly right-censored independent data samples.

Specifically, this standard is intended for analyzing failure-time (tf) data obtained from a stresstest of a sample of units when the natural logarithm of the failure-time (ln tf) follow a normaldistribution.

This standard is not intended to describe techniques used to determine how well the failure datafits a lognormal distribution. However, if points lie along a straight line for plots generated insection 8 the lognormal distribution estimators will describe the points along the line.