Steven Wachs
Principal Statistician , Integral Concepts Inc
Steven Wachs has 25 years of wide-ranging industry experience in both technical and management positions. Steve has worked as a statistician at Ford Motor Company where he has extensive experience in the development of statistical models, reliability analysis, designed experimentation, and statistical process control.

Steve is currently a Principal Statistician at Integral Concepts, Inc. where he assists manufacturers in the application of statistical methods to reduce variation and improve quality and productivity. He also possesses expertise in the application of reliability methods to achieve robust and reliable products as well as estimate and reduce warranty. Steve regularly speaks at industry conferences and provides workshops in industrial statistical methods worldwide.
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Recorded Webinar
Stability Studies and Estimating Shelf Life with Regression Models
Manufacturers of foods, drugs, consumer goods, and other products must determine the shelf life of their products so that customers know when the product can be expected to perform as intended. Many approaches are available to quantify the "shelf life" and the method(s) chosen often depend on the testing time available.
Recorded Session Get life time access for one participant with download option!

Stability Studies and Estimating Shelf Life
This webinar discusses the steps to set-up a stability study and analyze the results to estimate the product's shelf life. The use of regression models to model the relationship between the response variable(s) and time are presented. Models useful for describing non-linear degradation over time are also presented. Additionally, methods for handling non-normal response data are also discussed. Finally, the use of accelerating variables to shorten the study time and the models required are introduced. The webinar includes several examples to illustrate the methods discussed.
Recorded Session Get life time access for one participant with download option!

Acceptance Sampling Plans for Process Validation and Production Lot Monitoring
This webinar will cover acceptance sampling plans for process validation and production lot acceptance. Sampling plans for attribute data are the primary focus although variable acceptance sampling plans are presented as well. The binomial distribution and its use in developing Operating Characteristic (OC) curves will be discussed.
Recorded Session Get life time access for one participant with download option!

Stability Studies and Estimating Shelf Life with Regression Models
Manufacturers of foods, drugs, consumer goods, and other products must determine the shelf life of their products so that customers know when the product can be expected to perform as intended. Many approaches are available to quantify the "shelf life" and the method(s) chosen often depend on the testing time available.
Recorded Session Get life time access for one participant with download option!

Modeling and Optimizing Process/Product Behavior Using Design of Experiments
Experimentation is frequently performed using trial and error approaches which are extremely inefficient and rarely lead to optimal solutions. Furthermore, when it's desired to understand the effect of multiple variables on an outcome (response), "one-factor-at-a-time" trials are often performed. Not only is this approach inefficient, it inhibits the ability to understand and model how multiple variables interact to jointly affect a response. Statistically based Design of Experiments provides a methodology for optimally developing process understanding via experimentation.
Recorded Session Get life time access for one participant with download option!

Demonstrating Product Reliability - Sample Sizes and Testing Times
Product Reliability requirements must be satisfied like all other performance requirements prior to product launch. However, since reliability is a function of time, the methods for verifying that reliability performance has been verified differ than for most other performance characteristics. This webinar will present several approaches for verifying that reliability targets or specifications have been achieved at the desired level of confidence. Specifically, approaches using time-to-failure data to estimate reliability metrics as well as demonstration tests, where minimum reliability may be demonstrated with zero or few failures are discussed.
Recorded Session Get life time access for one participant with download option!

Process Capability Assessment for Normal and Non-Normal Data
This webinar discusses methods for estimating process capability for both normal and non-normal data. Pre-requisites for estimating process capability (e.g. establishing process stability) are discussed first. Distributions are briefly described and methods for estimating ppm levels are presented. The use and limitations of common process capability indices (e.g. Cpk and Ppk) are discussed.
Recorded Session Get life time access for one participant with download option!

What Sample Size Do I Need?
The webinar will provide important considerations when selecting sample sizes for specific applications. The knowledge gained by attending the webinar will allow practitioners to consider the implications of sample size selection prior to conducting the study and ensure that the information obtained can be useful for decision making.
Recorded Session Get life time access for one participant with download option!

Stability Studies & Estimating Shelf Life
This webinar discusses the steps to set-up a stability study and analyze the results to estimate the product's shelf life. The use of regression models to model the relationship between the response variable(s) and time are presented. Models useful for describing non-linear degradation over time are also presented. Additionally, methods for handling non-normal response data are also discussed. Finally, the use of accelerating variables to shorten the study time and the models required are introduced. The webinar includes several examples to illustrate the methods discussed.
Recorded Session Get life time access for one participant with download option!

Optimizing Target Weights for Foods and Beverages
This training program will elaborate factors affecting the target weight decision and help determine the tolerable risks of under-filling and the costs of over-filling. Attendees will gain an understanding of process stability and process capability concepts and methods for process optimization.
Recorded Session Get life time access for one participant with download option!

Sampling Plans for Process Validation and Production Lot Acceptance
This webinar covers Acceptance Sampling plans for process validation and production lot acceptance. Sampling plans for attribute data are the primary focus although variable acceptance sampling plans are presented as well. The binomial distribution and its use in developing Operating Characteristic (OC) Curves is discussed. The key inputs to determining sampling plans (AQL, RQL, Consumer's and Producer's Risks) are described in detail. Key characteristics of the generated sampling plans (such as average outgoing quality) are presented. Double sampling plans are briefly introduced. Several example applications of acceptance sampling are presented. The use of Statistical Process Control and Process Capability methods are presented as an alternative to variable acceptance sampling plans.
Recorded Session Get life time access for one participant with download option!

Predicting Product Lifetime using Reliability Analysis Methods
Participants will gain awareness of the overall methodology for setting reliability targets, estimating product reliability from test data and/or field data, and determining whether or not reliability targets are achieved. Participants will also learn how to calculate sample sizes for reliability testing.
Recorded Session Get life time access for one participant with download option!

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