COST ROLLUP is a determination of all cost elements within total cost. A cost rollup will normally but not always allow for the dissection of cost by material by a where used chain to the individual component, labor by operation and overheads applied. See COST IMPLOSION.
DECISION THEORY is a body of knowledge and related analytical techniques of different degrees of formality designed to help a decision maker choose among a set of alternatives in light of their possible consequences.
STAT is an abbreviation of "statistical", e.g. stat software package.
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