This study investigates the qualitative advertising effects of TV programs that is suggested as the alternative methods to exceed the quantitative advertising effects of TV programs with the changes of the media usages in the competitive media marketplace. In this study, the engagement is used to measure the quality of TV programs, it is discussed as the index for the qualitative measurements of TV programs in the famous world symposium already. For the research purposes it tried to find the interaction effects between engagements and ratings of TV programs in the advertising effects of TV programs when it is considered the covariate effects of clutters in advertising. This study found statistically significant interaction effects of engagements and ratings of TV programs by the several variables those are critical in the sales of broadcast advertising, such as the genres of TV programs, the sex of audience, the time of TV programs, the channels of TV programs. Practically this study contributes to make the optimum packages in the sales of the broadcast advertising with consideration of the differences of interaction effects between engagements and ratings of TV programs on the index of brand power of advertising.