TRP---Sum of all rating points over a specific time period or over the course of a media plan; sometimes called homes per rating point. The rating of a show represents the percentage of people (or households) tuned in to a television program as compared to the number of television sets in the particular television universe (geographical location). Each rating point is equal to 1%. If a show has a rating of 7, that means that 7% of all persons (or households) who have a television were tuned in to that show (whether the other televisions were turned on or not). If there are two shows on a particular station during a particular time period, and the first show has a rating of 7 and the other a rating of 10, then the GRPs for that time period equal 17.
A television rating system or TRP is a method of giving television viewers an idea of the suitability of a television program for children and/or adults. This is arrived by viewership of a programme and calculate by percent of viewers watching a programme in the week.The TRP measures the popularity of a programme, daypart, commercial break or advertisement, by comparing its audience to the population as a whole. One TPR is numerically equivalent to one per cent of a target audience.