Profile Topics Started Replies Created Engagements Favorites Search replies: Forum Replies Created Viewing 1 post (of 1 total) Author Posts September 18, 2017 at 7:58 pm in reply to: CSSBB Primer Sample Questions – Need Help #5848 waardgParticipant Basic Green Belt Study Guide (Free) Cpk = MIN [(USL – mu) / 3 sigma)] ; [(mu – LSL)/3 sigma)] sigma = Rbar / d2 Rbar = 10, d2 comes from a table. (R= Range = Spread) Author Posts Viewing 1 post (of 1 total)