Control is the management function that involves monitoring activities to ensure that they’re being accomplished as planned and correcting any significant deviations. Managers can’t really know whether their units are performing properly until they’ve evaluated what activities have been done and have compared the actual performance with the desired standard. An effective control system ensures that activities are completed in ways that lead to the attainment of the organization’s goals. The effectiveness of a control system is determined by how well it facilitates goal achievement. The more a control system helps managers achieve their organization’s goals, the better it is.