Archive for 'Statistics'
Introducing Control Charts (Run Charts)
by Jon Peltier
Peltier Technical Services, Inc., Copyright © 2008. All rights reserved.
Introduction to Control Charts
While employed as a scientist/engineer for a large manufacturing corporation, I pulled a stint as trainer for my company’s Total Quality program. This role occupied half of my time for three or four years. A large component of our Total Quality initiative was related to Statistical Process Control (SPC). And of all [...]
Posted: Thursday, May 1st, 2008 under Charting Principles, Data techniques, SPC, Statistics.
Comments: 2
Statistical Process Control
by Jon Peltier
Peltier Technical Services, Inc., Copyright © 2008. All rights reserved.
Statistical Process Control (SPC) is a set of statistical and related methods for monitoring processes with an aim to improve productivity and reduce costs, time, and waste incurred by these processes. In fact, SPC is a philosophy surrounding the monitoring, analysis, and adjustment of process variables to produce continuous improvements in the process.
There are a [...]
Posted: Wednesday, April 30th, 2008 under Charting Principles, Data techniques, SPC, Statistics.
Comments: 5
Bill James Interview on Freakonomics
by Jon Peltier
Peltier Technical Services, Inc., Copyright © 2008. All rights reserved.
The Freakonomics blog interviewed Sabermetrics founder Bill James, in Bill James Answers All Your Baseball Questions. Bill James has been educating and entertaining us with his statistics-based observations about baseball for three decades. Baseball has always been surrounded by statistical analysis, but Mr James has been driven by a need to understand the game [...]
Posted: Friday, April 4th, 2008 under Amusement, Statistics.
Comments: none
Statistics: Main Effects Plot
by Jon Peltier
Peltier Technical Services, Inc., Copyright © 2008. All rights reserved.
A commonly used chart type for statistical analysis is a Main Effects Plot. I won’t go into the statistics behind this chart type here, but I want to show how easy it can be to construct such a chart. For this example, suppose there are three main effects, designated X1, X2, and X3, and an experimental [...]
Posted: Monday, March 10th, 2008 under Charting Principles, Example Charts, Statistics.
Comments: 5


