Television Rating Point
According to TOI, june8, 2003 Television Rating Point ( TRP) is a tool provided to judge which programmes are viewed the most. This gives us an index of the choice of the people and also the popularity of a particular channel. For calculation purpose, a device is attached to the TV set in a few thousand viewers' houses for judging purpose. These numbers are treated as sample from the overall TV owners in different geographical and demographic sectors. The device is called as People's Meter. It records the time and the programme that a viewer watches on a particular day. Then, the average is taken for a 30-day period which gives the viewership status for a particular channel. What is TRP and how is it computed?
A television programme or a commercial sent over the air, on a cable system, or direct from a satellite is available for viewing by millions of viewers. How does one know how many of those millions are actually viewing a particular programme? Unlike a newspaper or a magazine, where the publisher can count how many copies are sold, there is no direct way to know exactly how many people are watching any given programme. Hence, indirect measuring techniques based on the statistical sampling theory, called Television Audience Measurement (TAM), are used.
Technically speaking, TAM is a specialised branch of media research, dedicated to quantifying and qualifying detailed TV audience information. In India, TAM is commonly referred to as TRP or TV Ratings Points. Generally, when used for the broadcast medium, a rating point equals 1%of the given population.
Why do we need these ratings?
With the hundreds of crores of rupees spent annually on TV programmes and commercials, reliable TV audience information is required to evaluate and maximise the effectiveness of this investment. This has led to the ever-increasing desire by broadcasters, advertisers and advertising agencies to have accurate, consistent and detailed information about TV audiences. These ratings, if reliable and valid, become `common currency' for the market's commercial airtime. Media planners and buyers evaluate the alternative programmes offered to best achieve their advertising goals, broadcasters evaluate programmes or a station’s popularity and how much to charge advertisers for commercials during a programme or on a given channel. In those cases where the channels are funded wholly or partly by public licence, they provide accountability.
How is viewership measured?
There are many ways to measure the audiences. One is through random telephone calls (if teledensity is satisfactory). Another is by using TV diaries, booklets in which samples of viewers record their television viewing during a measurement week. However, with the increasing numbers of channels, multiple broadcasting platforms and increased numbers of TV sets and remote controls per family, electronic gadgets called people meters are used to measure audiences. The people meter, about the size of a paperback book, is placed on each TV set in the sample home. The box has buttons, and lights are assigned to each person who lives in the household (with additional buttons for guests). Each meter is capable of accurately monitoring every second, 24 hours a day, 365 days a year, what is being viewed on each TV set and by whom. The meter stores this data. The data is then periodically transmitted by means of the family's telephone line, or a dedicated cellular telephone line to a central computer for analysis. In actual practice, all the three methods are used in combination, for increasing the accuracy and for crosschecking.
The world's first people meter was installed in 1976 in 500 homes in Italy by LCM Graman, an Italian market research company. Today, AC Nielsen, AGB Group and Gallup are the three leading TAM agencies. Most of the television markets in the world have a single TAM rating. However, India till recently had two - one called TAM done by AC Nielsen and other INTAM reported by ORG-MARG. However by the end of this year, TAM and INTAM will be merged to form a consolidated industry standard.
How reliable are TRP ratings?
As with any sampling, TRP ratings could be inaccurate due to sampling errors like inadequate coverage of the TV owning population. In India, for example, TAM ratings are based on people meters installed in only 16 top cities in nine states. Also, the panel households exclude lower middle and top income bracket households, which are keen watchers of niche English channels. Then the whole system is based on the list of metered households being confidential so that their viewing habit is not unduly influenced.
What is TRP rating? Who is controlling, how they guess the people popularity channel?
Television Rating Points - TRP is the criterion that indicates the popularity of a channel or programme and this data is very useful for the advertisers
Presently, 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. 'People meter' is a costly equipment, which is imported from abroad. It reads the frequencies of channels, which are later, decoded into the name of the channels and the agency prepares a national data on the basis of its sample homes readings. But there is a drawback in the technique, as cable operators frequently change the frequencies of the different channels before sending signals to the homes. It may be very misleading to read a channel according to a particular frequency even if the down linking frequency is same all over India.
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.
