Sana Shahab

Work place: Department of Statistics & Operations Research, Aligarh Muslim University, Aligarh, India

E-mail: sana.shahb@gmail.com

Website:

Research Interests: Statistics

Biography

Sana Shahab is a Ph.D. candidate in department of Statistics & Operations Research at Aligarh Muslim University, Aligarh (U.P.), India . She has received her M.Sc. degree in statistics from A.M.U. in 2010 and B.Sc. degree from the same in 2008. Her area of research is Accelerated Life Test Design. She has published 3 research papers in journals of statistics and has attended many international conferences and workshop related to her research area.

Author Articles
Graphical Representation of Optimal Time for a Step-Stress Accelerated Life Test Design Using Frechet Distribution

By Sana Shahab Arif-Ul-Islam

DOI: https://doi.org/10.5815/ijitcs.2014.12.10, Pub. Date: 8 Nov. 2014

The article provides an approach of getting optimal time through graph for Simple step stress accelerated test of inverse weibull distribution. In this we estimate parameters using log linear relationship by maximum likelihood method. Along with this, asymptotic variance and covariance matrix of the estimators are given. Comparison between expected and observed Fisher Information matrix is also shown. Furthermore, confidence interval coverage of the estimators is also presented for checking the precession of estimator. This approach is illustrated with an example using software.

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