Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Control Limits on Non-Normal Distribution

Thread starter calpoly
Start date Aug 7, 2003

Status: Not open for further replies.

Aug 7, 2003

calpoly

Industrial

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.