Notice the boulders in the center of this picture of a glacially formed landscape.What are they? How did they get there? 
Definitions:
Variable Overhead Efficiency Variance
A measure used to evaluate the efficiency of variable overhead resources used in production relative to the standard consumption expected.
Particular Product
A specific good or service offered by a company, distinct from other offerings within its product line.
Labor Efficiency Variance
measures the difference between the actual hours worked to produce goods and the standard hours expected, multiplied by the standard labor rate.
Direct Labor-Hours
The hours worked by employees directly involved in the production process.
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