Standards and Statistics



Standards And Statistics

The Standard Error Concept

Measuring a Random Error in a Reported Statistic
Q: What is a standard error and how is this used in practice? Click here to download the full article... more
Industry Sectors: 
Quality


Standards And Statistics

Using Simple Graphics in Data Analysis

How the Time Plot and Multiple Dot Plot Figure in Process Troubleshooting
Q: What graphics are useful in process troubleshooting? Click here to download the full article... more
Industry Sectors: 
Quality


Standards And Statistics

Shewhart Individuals Control Charts

Part 2: More on Sample Size and Chart Reliability
Q: How does sample size impact Shewhart individuals control chart reliability? Click here to download the full article... more
Industry Sectors: 
Quality


Standards And Statistics

Shewhart Individuals Control Charts

Part 2: More on Sample Size and Chart Reliability
Q: How does sample size impact Shewhart individuals control chart reliability? Click here to download the full article... more
Industry Sectors: 
Quality


Standards And Statistics

Shewhart Individuals Control Charts

Part 1: Sample Size and Chart Reliability
Q: How does sample size impact Shewhart individuals control chart reliability? Click here to download the full article... more
Industry Sectors: 
Quality


Standards And Statistics

Is It in Spec ... or Not?

How to Use the Assigned Test Value for Conformance Decisions
Q: Can a product with a single inspection result that is worse than the specification limit by an amount not exceeding reproducibility (R) be... more
Industry Sectors: 
Quality


Standards And Statistics

Lot Acceptance Procedure Criteria

Providing Statistical Confidence to Pass
Q. Lots are released based on comparing test results from a sample to lot acceptance procedure criteria. If a set of test results meets the lot... more
Industry Sectors: 
Quality


Standards And Statistics

Statistical Intervals: Nonparametric

Part 1
Q: How are nonparametric intervals applied and used? Click here to download the full article... more
Industry Sectors: 
Quality


Standards And Statistics

Setting Control Limits

The Roles of Data and Subject Matter Experts
Q: How are limits set? Click here to download the full article... more
Industry Sectors: 
Quality


Standards And Statistics

Test Method (Im)precision

How to Account for It
Q: How can you account for test method (im)precision in the adjudication of a petroleum product specification conformance dispute? Click here to... more
Industry Sectors: 
Quality

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