Ratings point is a measure of viewership of a particular television program.
Ratings are a measure of audience size, not (as you might guess) of popularity. If a program gets a rating of 20, that means that 20% of households in the survey area were watching it, averaged across all the minutes when it was being broadcast. Ratings can be either for a particular time (usually a 15-minute period for diaries, 1 minute for meters), or averaged across a time zone - such as an average peak-time rating from 6pm to 10pm.
One single television ratings point (Rtg or TVR) represents 1% of viewers in the surveyed area in a given minute
Gross rating points (GRPs)
or Target Rating Points (TRPs) are chiefly used to measure the
performance of TV-based advertising campaigns, and are the sum of the
TVRs of each commercial spot within the campaign. The GRP of a campaign is equal to the
percentage of people who saw multiplied by the average number of spots
that these viewers saw. Targeted Rating Points are a refinement of GRP's
to express the reach time frequency of only the most likely prospects.
Universe: Universe is the total or actual number of people in a defined target audience.
Reach: Reach is the number of individuals from the universe who are exposed to the medium or vehicle.
Reach is normally expressed in terms of % (percentages)
If universe is: 1000000 Individuals (it's approx. data, it's usually defined through sampling through people-meter)
For a single episode of a program (30 minutes or 1 hour) If out of above 1000000 of individuals 600000 saw at least 1 minute of programme then:
Reach = (600000/1000000) x 100
Reach = 60%
Variations of the REACH CONCEPT
Gross Reach is the summation of all audiences who have been exposed to the vehicle.
Cumulative Reach: The audiences accumulate over the time
' Net Reach: Net Reach is the summation of all audiences who have been exposed to the vehicle and excludes the duplication of the viewership.
TVR = Reach x Time spent
TVR = (minutes viewed/minutes available) + (mins viewed / minutes available)/N X100
N= Number of individuals
The sum of all ratings achieved in a campaign GRP levels are generally measured and reported on a 4 week basis It is a measure of the media plan's trust
It is a measure of the purchased television 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 the sum of each individual GRP multiplied by the estimated target audience in the gross audience..
Target 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 National Television Audience Measure) basis of its sample homes readings.IF U R in INDIA, make sure that your TV is tuned into NDTV Imagine at least 5 minutes before 9.00 because TRP machine notes down the trp of a show exactly when it starts..so if GKD starts at 8.59pm,it will b recorded exactly that time only...if u tune in even 1 min late and then u will not have contributed to trps