Home Downloads PHAST-TM


This program has been developed for the purpose of conducting post hoc analysis on fixed effects after an initial Analysis of Variance has been conducted and the null rejected. It has the capability to run four approaches and six procedures. This software may be used for both analysis of dispersion (utilizing Levene’s Test or Levene’s Improved Test) and central tendency.

When testing for Dispersion the Means and Variances should be calculated using the data from the Absolute Deviation from the Averages (Levene’s Test) or the Absolute Deviation from the Medians (Levene’s Improved Test). When testing for Central Tendency the Means and Variances should be calculated using the raw data.

Click here to download PHAST TM. It is free software, but the author does retain copyright. The terms of use are included in the program.

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If you have been following my articles over the last few months, you have seen that even though statistical process control (SPC) charts are very powerful tools for examining a process, it turns out that there are a lot of ways to mess up SPC. This month, I am going to


News Flash

Six Sigma's lead instructor Steven Ouellette wrote an article with Dr. Jeffrey Luftig on "The Decline of Ethical Behavior in Business."



Six Sigma Online's lead instructor Steven Ouellette was profiled in the June 2008 issue of Quality Digest magazine. If you want to learn more about Steve's peculiar view of the world, as well as what he studied for a year in Europe, read the profile online.