Originally Posted by nunnehi
Oh, so it's saying that 25 percent of the 18-49 TVs were tuned into the show? Is that what means?
Believe so - meaning you'd show a rating/share that addresses the same demo.
So if it's A18-49 10.7/25, it's 10.7% of total A18-49 viewers, with a 25% share of the A18-49 demo. It's odd to mix up those stats with different demos when they're reported like that.
You sometiems see "Household" (2+ viewers) reported in the same way - but I think most outlets report A18-49 because everyone knows that's how TV networks monetize.
And usually (IIRC, don't look at ratings too much anymore) you'll see A18-49 X.X/X with X milllions of total viewers (so gives the money stats, and then ends with emphasis on total viewership as a point of reference).
On this random chart I pulled from Tv by the numbers, that's how they're reporting it (notice ratings/share is tied to A18-49 demo, with a separate column for "total viewers")
And if you're bored for a time period exercise - on that chart I linked above - if you add up the A18-49 share at 8pm for the shows listed, it is 37. That means 63% of A18-49 viewers using a TV were not watching FOX/CBS/ABC/NBC/CW, and either watching another broadcast network like Univision/PBS, watching Cable, or playing a video game/watching a DVD wahtever.