• uma srivastava
• Parul Yadav

When some items are put to test their lives on a life testing system or equipment, we see that after sometimes due to some abrupt change like shut down of the system, there is a break in sequence in recording their lives. This abrupt change can cause in dividing the sequence into two parts. For example If n items are put to test their lives then their lives will be x_1,x_2,…..,x_n. If there is one break in sequence, then sequence is divided into two parts. Suppose the change occurs at point mth, the sequence will be x_1,x_2,…..,x_m. and x_m,x_2,…..,x_(n+1). Now the problem is how to detect and estimate the break point. In this paper, we have applied the Bayesian estimation method and test our detection by preliminary test estimation technique. The numerical comparison is also done by using R software

Change-point analysis, abrupt change, CUSUM control Chart, Bayesian Estimation, Preliminary test estimator, LLF.

"Bayesian Preliminary Test Estimation (BPTE) of a change point in Weibull Sequence under LLF", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 2, page no.184-190, February-2021, Available :http://www.jetir.org/papers/JETIR2102323.pdf

"Bayesian Preliminary Test Estimation (BPTE) of a change point in Weibull Sequence under LLF", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 2, page no. pp184-190, February-2021, Available at : http://www.jetir.org/papers/JETIR2102323.pdf