Has anyone come across this as a means of calculating Cpk of a true position?
http://documentation.statsoft.com/ST...tionCapability
I think it should be possible, but I'm not sure if this is the answer or not. I was thinking about how something along the lines of the complex plane (or vectors/trig) could be used to identify grouping of a positional tolerance based on its quadrant within a unit circle, and then could be used to calculate Cpk. It's not unheard of. The
normal distribution of a multivariate system is calculable, so why wouldn't a statistic that is related to the normal distribution in 1 variable work for higher dimensions?
I'm thinking that there must be a way to calculate the variance of position based on the the quadrant it falls in. Whether it's a trigonometric function, or a complex function.
Anyone have any input as I dive into this blackhole?
Curiosity killed the cat, hopefully I'm not a cat.
JEFMAN
