A Television Rating Point (TRP) is a measure of the purchased television rating points representing an estimate of the component of the target audience within the gross audience. Similar to GRP (short for Gross Rating Point) it is measured as the sum of ratings achieved by a specific media vehicle of the target audience reached by an advertisement. For example, if an advertisement appears more than once, reaching the entire gross audience, the TRP figure represents the sum of each individual GRP multiplied by the estimated target audience in the gross audience.
In the case of a TV advertisement that is aired 5 times reaching 50% of the gross audience with only 60% in the target audience, it would have 250 GRPs (= 5 x 50) -- ie, GRPs = reach x frequency - TRP in is this case should be 60% out of 250 GRPs = 150 TRPs - this is the rating point in the target, 60% of the gross rating.
INTAM (Indian Television Audience Measurement) is the only electronic rating agency functioning in India. INTAM uses two methodologies for calculating TRP.
First is frequency monitoring, in which 'people meters' are installed in sample homes and these electronic gadgets continuously record data about the channel watched by the family members
Second technique is more reliable and relatively new to India. In picture matching technique people meter continuously records a small portion of the picture that is being watched on that particular television set. Along with this agency also records all the channels' data in the form of small picture portion. Data collected from the sample homes is later on matched with the main data bank to interpret the channel name. And this way national rating is produced
Answered by
Mahesh Kumar
at
10:29 AM on September 01, 2008
