The four-step process of control establishes performance standards, measures actual performance, compares actual performance to standards, and takes corrective action if needed. Setting performance standards establishes quantitative and qualitative goals. Measuring actual performance involves evaluating outcomes against intended goals using both top-down and bottom-up approaches. Comparing actual performance to standards determines any variations between the two. Taking corrective action prescribes changes when performance deviates from standards. All four steps are important for effective management.