(03-15-2013 03:18 PM)Hokie Mark Wrote: Q: Why doesn't NYC win this?
When you think what ratings actually represent, it makes sense. Nielsen gathers data from meters, panels, and censuses to estimate how many viewers are watching a given program in a given market. This is called an impression. In addition, each market has a given number of households/subscribers possibly watching a program. This is called a universe. When you take the number of impressions and divide it by the universe, you get a percentage. That percentage is the TV rating.
It is important to keep in mind that the universe (# of households/subscribers in a market) varies between markets. For example, let's say that we are comparing two markets.
Louisville = 670,880 households
New York = 7,384,340 households
Now let's say that 30,190 people tuned in to a college basketball game in Louisville and 36,922 tuned in to a college basketball game in NYC. If we go by the equation impressions / universe = ratings, then Louisville would generate a 4.5 rating and NYC would generate a 0.5 rating. Louisville's 4.5 average rating essentially means that 4.5% of all TV households in the Louisville market were watching college basketball on ESPN over the course of the year. On the other hand, NYC's still had more people tuned in (36,922 versus 30,190) despite a lower rating because NYC's universe is much larger.