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Standardization News

Building on Reliability: Reliability Test Planning, Part 3

Q. How do we use the Weibull distribution for our failure mode model, allowing for one or more failures?

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Probability Models for Epidemics and Materials

Q. How does knowledge of materials help us to understand an epidemic?

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Building on Reliability: Reliability Test Planning, Part 2

Q. How does a Weibull statistical model help in reliability test planning?

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The (Mis)Use of Ordinary Linear Squares Regression

Q. Can ordinary linear regression (such as the linear trend function in Excel) be used to develop correlation between two test methods that claim to measure the same property?

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Building on Reliability: Reliability Test Planning

Q. What is reliability demonstration testing?

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The Impact of Measurement Variability Heterogeneity on Calibration and Control Charting

Q. Does measurement system heterogeneity impact statistical analysis? 

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General Considerations for Working with Data

Q. What are the general considerations before collecting data?

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Setting an Upper Confidence Bound on Proportion Nonconforming

Q. Is it possible to calculate a 95% upper confidence bound for the proportion nonconforming in the uninspected remaining units in a lot of N units, from which we sample n of them and find x…

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The Weibull Model — Building on Reliability

Q. What is the Weibull distribution and how is it used in data analysis? 

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Questions About Sample Size

Q. Is 30 a large sample size?

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