Greetings everybody,
I am putting together a U-Control Chart (Nonconformities per unit)and seem to be getting a negative LCL. I've checked my formula and seems correct. What does the negative LCL mean? Thank you in advance for your responses. It will help me a great deal.
Greetings,
I am putting together an X bar-R chart and I want to know if my data is non-normal (did this by plotting z scores and not getting a straight line) does the formula change for the control limits. If so, what is it? Thank you in advance for your help.
Greetings fellow IE's,
I work for a distribution center where we have a sorter system that scans boxes from overhead and diverts the boxes down the shipping lanes and to the trailers. I am trying to calculate the Cp/Pp,Cpk/Ppk, but am having trouble figuring out if my Cp is accurate. I am...
Hello Fellow IE's:
Had a question regarding data that appears to be somewhat bell-shaped curved, but I do not recall if there is a definite calculation that will tell me whether or not the population follows a normal distribution. I am looking at starting SPC at my site on our sortation system...
I have been asked by my boss to conduct a self-evaluation on my performance over the last year. Our company just started this Industrial Engineer position and does not have anything in place for self-evals. Does anyone out there have a generic form that I could use for a self-assesment? or if...
