Content by Steven Ouellette

Steven Ouellette's picture
Steven Ouellette
After my last column citing some really bizarre flaws in how our brains perceive reality, I thought I might cover some flaws in logic that are applicable in the world of quality. So, basically, even...
Steven Ouellette's picture
Steven Ouellette
I know we have been talking about statistics a lot in my last few articles, but recent reader comments have prompted me to think more about why doing statistics properly matters. Come with me, dear...
Steven Ouellette's picture
Steven Ouellette
Throughout the last couple of articles, I have explained and illustrated that understanding the random sampling distribution (RSD) of a statistic is key to understanding the entire basis of...
Steven Ouellette's picture
Steven Ouellette
Last month I wrote about how the random sampling distribution (RSD) of various sample statistics are the basis for pretty much everything in statistics. If you understand RSDs, you understand a lot...
Steven Ouellette's picture
Steven Ouellette
Story update 10/05/2010: Corrections were made to captions for Figures 6, 7, 8, 9. As I was teaching class the other day, I told the students I was going to reveal to them the one secret they...
Steven Ouellette's picture
Steven Ouellette
So I thought I was done with measurement system analysis after my last column, but I just finished reading Don Wheeler’s June 1 column, “Is the Part in Spec?” and the first thing I thought was, “...
Steven Ouellette's picture
Steven Ouellette
We have recently covered a lot of ground on the topic of measurement system analysis (MSA). We talked about the basics of MSA, the potential study, the short-term study, and the long-term study. At...
Steven Ouellette's picture
Steven Ouellette
A hh, measurement system analysis—the basis for all our jobs because, as Lord Kelvin said, “… When you cannot measure it, when you cannot express it in numbers, your knowledge is of a meager and...
Steven Ouellette's picture
Steven Ouellette
In the past couple of articles, we have been having fun together testing whether a measurement device is usable for the crazy purpose of determining if we are actually making product in or out of...
Steven Ouellette's picture
Steven Ouellette
If you can’t trust your measurement system, you can’t do anything with the data it generates. Last month, in “ Letting You In On a Little Secret,” we talked about the purpose of measurement system...