When discussing ANOVA, the error variance is the repeatability. Technical variance is the reproducibility.
A,B,C are true
source...net..for explanation of this option
To validate root causes identified in the Open-Narrow-Close efforts, the team should employ three tools/techniques:
In the open phase you want to gather as many ideas as possible. To do that you might use a cause and effect diagram.
Generate as many suspects (people of interest) , Brainstorming (Cause and Effect Diagram, Fish Bone Diagram)
Narrow (SME of the team) – eliminate duplicates, narrow thru multi voting to get to a narrower list
– 5 Ys to break biggers Xs to smaller managable X’s
Close – validate using Hypothesis and convict them or set them free
Validated X’s will be worked on to IMPROVE
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