Carl Tarum is the founder and president of Bathtub Software LLC.  He is a trainer and consultant for Weibull Engineering.  His 34 years of automotive experience in hydraulic and electric steering systems included product development, reliability, innovation, and Functional Safety.  In 2018 he begin working full-time on Weibull Engineering training and software.

His first work with Weibull Engineering was developing the Critical Correlation Coefficient and p-value estimate as tools to estimate the goodness of fit for rank regression on Weibull and Log-Normal distributions.  He also developed equations and fit methods for mixtures of Weibull distributions, first available in YBath™ software. (Now a part of SuperSMITH®.)  Recently he presented a method to estimate missing data points when it is known that points are missing but not how many points are missing.  (For example, supplier ships parts in specification but doesn’t tell you how many parts were out of specification and scrapped.)  These features are in the SuperSMITH Software, which he maintains with Wes Fulton.

Carl has five patents, including two for Electric Power Steering handwheel position sensing that are in production.  He is a Design for Six Sigma Master Black Belt and a Six Sigma Black Belt.  Carl is a member of SAE and ASME.  He has a BSME from Montana State University and an MBA from the University of Michigan – Flint.