Rating vs. Share vs. HUT
Share
The percentage of homes, out of the universe of households with their TVs on ("homes using television"), watching a specific show at a specific time
Ratings
The percentage of households watching a particular show at a specific time, out of the universe of households owning televisions
HUT
The percentage of households with their televisions turned on
Data miming
The practice of examining large databases in order to generate new information
Random sampling
a way of selecting a sample of observations from a population in order to make inferences about the population
Focus Group
A group of people surveyed for their opinion(s) about a particular topic