29.4 Parametric Analysis
The parametric analysis assumes a theoretical model for the data (exponential, Weibull, lognormal, etc.). The identification of the distribution that best fits the data is achieved through Distribution ID Plot, as previously seen.
Stat > Reliability/Survival > Distribution Analysis (Right Censoring) > Parametric Distribution Analysis
This allows the estimation of reliability values, and to draw reliability and risk functions for complete or right censored data assuming a theoretical model for the data.
The session window after carrying out a parametric analysis looks as follows:
What is the reliability value after 40 000 hours of functioning?
The Minitab output is:
Thus, the reliability value at 40 000 hours is equal to 0.5766. The reliability value obtained (at 40 000 hours) from a parametric (assuming an exponential model) or nonparametric ...