Final answer:
The correct formula for measuring cost variance is the subtraction of the standard cost from the actual cost, which gives insight into whether production costs are above or below expectations.
Step-by-step explanation:
The correct formula for measuring a cost variance is:
Cost Variance = (Actual Cost - Standard Cost)
This formula is used to determine whether the actual cost of producing a good or service is above or below the expected, or 'standard,' cost. A positive cost variance indicates that production was more expensive than planned, while a negative cost variance indicates it was less expensive. This measure is crucial for businesses to understand their cost management performance and to make informed decisions regarding their production processes.