Eficienta unui anunt sau campanii de advertising in ridicare vanzarilor unui produs, in general greu de masurat deoarece vanzarile pot fi influentate de alti factori decat advertisingul, cum ar fi pretul produsului, celelalte caracteristici ale sale, disponibilitatea sa si actiunile competitorilor. Vezi Advertising Effectiveness
the effectiveness of an advertisement or advertising campaign in boosting sales of a product; generally hard to measure as sales may be influenced by factors other than advertising, such as the product's price, its other features, its availability and the actions of competitors. See Advertising Effectiveness.