One important metric for advertisements is reach, the number of target consumers a medium can deliver to.
Reach is the total number of distinct individuals or households exposed to a medium over the course of a certain time period in the context of applying statistics to advertising and media analysis. However, the number of people who will actually be exposed to and consume the advertisement should not be confused with reach.
A promotional message is delivered to the public via words, speech, photos, or video, which is referred to as the "advertising medium." Billboards, periodicals, radio, television, direct mail, and the Internet are all included in this definition.
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