Use this formula to determine TRP:
TRP = GRP x Percentage of target audience
Determine the numbers. For example, an ad airs with 43 percent of viewers seeing it each of three times it aired. The target demographic is 20 percent of the total audience.
Find the GRP, which is rate x frequency. In the above example, the rate of viewers (43 percent) x the number of times it is seen (three) = GRP. 43 x 3 = 129 gross rating points.
Plug the GRP into the formula. GRP (129) x target audience percentage (20 percent) = TRP. 129 x .20 = 25.8 target rating points.
Interpret the numbers. Generally, TRP should average between 100 and 300 per week. Extremely good would be 400 or more, and less than 100 is ineffective. The score of 25.8 in this example shows an ineffective ad campaign
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Televison Rating Point
The tv is so important because most of the peoples love tv and they are watching tv series so they are giving trp . Also when they are bored they are watching t.v
The top 100 hit songs are calculated based on public opinion and sales. Songs that sell well are usually well received by the public and thus, make it to the top 100 list.
Approval ratings were not calculated during Washington's two terms as President. Washington considered his role largely ceremonial and did not court public favor, though he was well-liked.
According to the statistics, it´s been calculated that there 1 tv per 14 people.