It is not possible for the X chart to be out-of-control when the R chart is in control. 
Definitions:
Cohesive
Characterized by unity and the tendency of a group or material to stick together.
Successive Stage Theory
A concept in development that suggests entities go through a series of distinct and chronological stages or phases as they evolve or progress.
Stages of Development
The concept of progressive phases individuals go through during their psychological, physical, or social maturation process.
Interpersonal Attraction
The force that draws individuals together, leading to friendships, romantic relationships, or other forms of social connections.
Q8: The dwindling supplies of rare metals such
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