Average minute audience

According to Nielsen Media Research, it is defined as "the average number of individuals or (homes or target group) viewing a TV channel, which is calculated per minute during a specified period of time over the program duration.

AMA is one of several ratings metrics provided by Nielsen Media Research, the leading company in TV audience measurement in the United States.

Nielsen uses a sample of 40,000 homes and about 100,000 people that is demographically representative of the population as a whole to estimate the AMA for various TV channels and programs.

Therefore, the AMA may underestimate the total audience size of some TV programs or events that have a significant online or mobile presence.

AMA replaced the previous metric of average quarter-hour (AQH) ratings, which only measured the audience in 15-minute intervals.

Viewers in Shanghai watching the 2010 Shanghai Expo opening ceremony