"Because many surprises occur during the implementation of marketing plans, marketers must practice constant marketing control—evaluating the results of marketing strategies and plans and taking corrective action to ensure that objectives are attained. Marketing control involves four steps. Management first sets specific marketing goals. It then measures its performance in the marketplace and evaluates the causes of any differences between expected and actual performance. Finally, management takes corrective action to close the gaps between its goals and its performance. This may require changing the action programs or even changing the goals." ( Marketing: An Introduction pg. 43).
"Control consists of measuring and evaluating the results of marketing activities and taking corrective action where needed. Finally, marketing analysis provides information and evaluations needed for all of the other marketing activities." ( Marketing: An Introduction pg. 55).
"Through implementation, the company turns the plans into actions. Control consists of measuring and evaluating the results of marketing activities and taking corrective action where needed." (Marketing: An Introduction pg. 31)
