Target rating point
A target rating point (TRP) is a metric used in marketing and advertising to indicate the percentage of the target audience reached by a campaign or advertisement through a communication medium. In the particular case of television, a device is attached to the TV set in a few thousand viewers' houses to measure impressions. These numbers are treated as a sample from the overall TV owners in different geographical and demographic sectors. Using a device, a special code is telecasted during the programme, which records the time and the programme that a viewer watches on a particular day. The average is taken for a 30-day period, which gives the viewership status for the particular channel.
For example, if an advertisement appears more than once, the entire gross audience also, the TRP figure is the sum of each individual GRP, multiplied by the estimated target audience in the gross audiences. The TRP and GRP metrics are both critical components for determining the potential marketing reach of a particular advertisement. Outside of television, TRPs are calculated using the denominator as the total target audience, and the numerator as the total impressions delivered to this audience x 100. (As in 1,000,000 impressions among the target audience / 10,000,000 people in total in the target audience x 100 = 10 TRPs). TRPs are often added up by week, and presented in a flowchart so a marketer can see the amount of impressions delivered to the target audience from each media channel.
- Farris, Paul W.; Neil T. Bendle; Phillip E. Pfeifer; David J. Reibstein (2010). Marketing Metrics: The Definitive Guide to Measuring Marketing Performance. Upper Saddle River, New Jersey: Pearson Education, Inc. ISBN 0-13-705829-2. The Marketing Accountability Standards Board (MASB) endorses the definitions, purposes, and constructs of classes of measures that appear in Marketing Metrics as part of its ongoing Common Language in Marketing Project.