The Single Best Strategy To Use For 3 sigma rule for limits
Why are control charts based upon 3 sigma limits? This publication addresses that dilemma. A few sigma limits have been around for nearly a hundred yrs. And Inspite of some tries to alter this strategy, 3 sigma limits look like The obvious way to tactic control charts. On this issue:The limit inferior of a established X ⊆ Y will be the infimum