turn on suggestions

Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

- JMP User Community
- :
- Discussions
- :
- Re: process capability difference expected and obs...

Topic Options

- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Get Direct Link
- Email to a Friend
- Report Inappropriate Content

3 weeks ago
(191 views)

Hello,

could someone explain me what is the difference in process capability report between Observed and expected?

I imagine there is a modeling behind the expected value but cannot find in JMP help nor figure out.

thank you !

2 REPLIES

Highlighted
The expected percentages are what you would expect to be outside, below the LSL, or above the USL based on the distribution chosen (by default, the distribution is normal). So you would fit a normal distribution (or whatever distribution you chose) to the data and calculate these percentages from that. The observed percentages are based on the actual data. So this would be the actual percentage outside, below LSL, and above USL.

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Get Direct Link
- Email to a Friend
- Report Inappropriate Content

3 weeks ago
(180 views)

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Get Direct Link
- Email to a Friend
- Report Inappropriate Content

3 weeks ago
(163 views)

Tonya,

thank you very much .... I was not thinking about the normal distribution modeling!

Perfect answer and so quick. You made my day!!