Difference between control effectiveness and control efficiency?

Difference between control effectiveness and control efficiency?

• A. They are identical
• B. Efficiency measures resource use and cost
• C. Effectiveness measures achievement of objectives
• D. Effectiveness measures achievement of objectives; efficiency measures resource use and cost

Answer: (D)

The main idea is to separate whether a control actually achieves its purpose from how much it costs to run it. Effectiveness asks if the control meets its objectives—does it reduce the risk to the intended level? Efficiency looks at the resources used to achieve that result, focusing on cost and resource use. The correct statement says: effectiveness measures achievement of objectives; efficiency measures resource use and cost. If a control succeeds in reducing risk but costs a lot, it’s effective but not efficient. If it’s cheap and quick but doesn’t meaningfully reduce risk, it’s efficient but not effective. Other options misrepresent the relationship: one claims they’re identical, another focuses only on efficiency, and another only on effectiveness.

The main idea is to separate whether a control actually achieves its purpose from how much it costs to run it. Effectiveness asks if the control meets its objectives—does it reduce the risk to the intended level? Efficiency looks at the resources used to achieve that result, focusing on cost and resource use.

The correct statement says: effectiveness measures achievement of objectives; efficiency measures resource use and cost. If a control succeeds in reducing risk but costs a lot, it’s effective but not efficient. If it’s cheap and quick but doesn’t meaningfully reduce risk, it’s efficient but not effective.

Other options misrepresent the relationship: one claims they’re identical, another focuses only on efficiency, and another only on effectiveness.