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Natural selection can act on a certain trait only if the trait is
Direct Materials Quantity Variance
The variance between the real amount of direct materials consumed during manufacturing and the anticipated standard amount.
Standard Materials Quantity
The expected amount of materials that should be used for the production of a certain number of units, as set by a company's standards.
Board Feet
A unit of measure for the volume of lumber, equivalent to a piece of wood one foot long, one foot wide, and one inch thick.
Direct Materials Quantity Variance
The difference between the expected and actual quantity of materials used in production, multiplied by the standard cost per unit of material.
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