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Contents
| Quality Encyclopedia
| Discussion Blogs
SPC Articles
Home Run Leaders:
From our Spring '02 Newsletter.Baseball season is upon us, and already there is talk of the home run record being broken.
Again. We took a look at home runs over the last century, and saw some 'special' players
stand out.
NCAA Performance: In honor of the NCAA Tournament,
we've analyzed historical data using our SPC IV Excel software. One chart looks at the
likelihood of your Cinderella team winning the tournament, while the other investigates
the effect of NCAA rule changes on the variation in the Championship game scores.
Key
Success Factors for the Implementation of SPC: The full benefits
of SPC tend to be realized only when the motivation is appropriate.
Statistical
Inference: In many quality control applications, we make inferences
about populations based on sample data. Understand the limits of
these methods, and see some practical examples in this article.
Statistical
Inference Part 2: The article continues with discussion of Tolerance
Intervals, Hypothesis Testing, and Bootstrapping.
The
Relationship between Process Capability Studies and Process Control
Limits: Process Capability is inherently dependant on Process
Control.
Deming's
Funnel: Dr. Deming's Funnel Experiment is explained, with practical
implications to gage calibrations, on the job training, and process
adjustments.
Run
Test Rule 7: An example explaining how this rule violation occurs.
Rules
for Determining Statistical Control: This excerpt from Quality
Engineering Handbook describes Run Test rules for detecting
process shifts.
Using
Data Mining and Knowledge Discovery with SPC: Look at data in
different ways to see if there are any patterns that can guide you
to new understandings of the process.
Control
Chart Interpretation: Guidelines are presented for interpreting
patterns on control charts.
Common
and Special Causes of Variation: An overview of Shewhart's work
in establishing the operational definitions of these terms using
statistical control charts.
Rational
Subgroups: The basis of Statistical Process Control is the concept
of the rational subgroup.
Process
Performance Indices: Learn about PPIs in this article from author
Thomas Pyzdek.
SPC
Basics - Terms and Concepts: Properties of distributions and
the Central Limit Theorem is discussed.
Process
Sampling: The manner in which subgroups are collected can greatly
influence your control chart characteristics.
Multiple
Stream Processes: Like the tribbles on Star Trek, once you start
looking for them, you find they are everywhere...
Multiple
Stream Processes: (Part 2). Dr.
George Runger continues his discussion of multiple stream processes
with an example.
How
to Perform a Process Capability Study : A step by step guide
(Part 1 of 3)
Statistical
Analysis of a Process Capability Study : (Part 2 of 3)
Interpreting
Process Capability Indices: (Part 3 of 3)
Implementing
SPC: Starting and administering SPC is not a trivial task. Learn about
the traps and pitfalls that await the unwary.
Non-Normal
Distributions in the Real World : Author Tom Pyzdek explains why Normal
distributions are the exception rather than the rule in the real world.
Dealing
with Non-Normality : Paul Keller discusses how Non-Normal processes
can be evaluated.
Struggling
with Independence : A look at the independence assumption and its
effect on SPC charting, by Paul A. Keller.
Case
Study: Green Bay Packaging : An application of SPC.
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