Talk:Process performance index

	; Archives (Index) ;
	2015; 2020;
	This page is archived by ClueBot III.

Business C‑class Low‑importance

	Business portal This article is within the scope of WikiProject Business, a collaborative effort to improve the coverage of business articles on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.BusinessWikipedia:WikiProject BusinessTemplate:WikiProject BusinessWikiProject Business
C	This article has been rated as C-class on Wikipedia's content assessment scale.
Low	This article has been rated as Low-importance on the project's importance scale.

Statistics C‑class Low‑importance

	This article is within the scope of WikiProject Statistics, a collaborative effort to improve the coverage of statistics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.StatisticsWikipedia:WikiProject StatisticsTemplate:WikiProject StatisticsStatistics
C	This article has been rated as C-class on Wikipedia's content assessment scale.
Low	This article has been rated as Low-importance on the importance scale.

Hello...noticing that the Process Performance article is not entirely accurate as the Process Performance Index is calculated using the standard deviation for the process and not the sample standard deviation. Also, the Ppk is more of a long-term measure and the text seems to indicate that it is not. The description here seems to more closely match the Process Capability Index or Cpk. 99.162.81.250 (talk) 00:08, 25 March 2019 (UTC)[reply]