ia outlet in a particular moment in time. The difference between the two is that the rating point reive information on the expected sales in the near future, the hit rate indicates whether the sales ohe early 1950s, the Dumont television network began the modern trend of selling advertisement time tbrokers for advertisement space in newspapers. N. W. Ayer & Son was the first full-service agency toa first estimate to quantify the user data collected by large Web companies.
↧