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ブログ 6月. 18, 2008 | Share

Do GRPs Have a Place in Online Media?

In the fall of 1980, as a second-half senior at NYU, I was taking a class called Advertising and Media Planning. I'd already begun working part-time at Arbitron, so I thought I knew a thing or two. On the midterm, one of the questions was: "Define Gross Rating Points." I confidently answered: "reach times frequency." But the professor... さらに表示する