Broadcast Media Terminology

Rating:  The percentage of individuals or households exposed to a particular television or radio program. 

Gross Rating Point: The sum of individual ratings in a media plan. 

Reach (unduplicated audience; net audience):  The number or percent of a potential audience exposed to a specific vehicle or media schedule at least once within a given time period.

Frequency:  The average number of times an individual (or household) sees or hears an advertising message, an advertising campaign, or a specific media vehicle. In radio: frequency = (AQH [00] x spots) / reach. In TV: frequency = GRPs / reach)

Cost Per Rating Point (CPP):  The cost of media vehicle or schedule for reaching on rating point (one percent) of a specified audience.  CPP=cost of schedule.  GRP's or CPP=cost per spot/average rating.

Day part:  Periods of time in a day during which TV and radio stations broadcast programs. Stations differentiate programs according to changing audience composition and/or broadcast origination time. While TV and radio each recognize typical day parts, such as Prime Time (TV) or Morning Drive (radio), the time periods that define a day part can vary according to an advertiser's preferences. Day part time periods also differ according to the time zone of a market.