All sample frames are weighted together. Generally, weights are applied to age, race, education, and area variables. The Fox News poll is not weighted by party identification.

In statistics, sampling means selecting the group that you will collect data from in your research. Sampling errors are statistical errors that arise when a sample does not represent the whole ...

Some surveys are conducted among subgroups in the panel, such as Black Americans or young people, and may include a supplement sample (called “oversamples”) from another panel such as Ipsos’ ...

In-store samples increase sales, both in the immediate and extended time frame. Sampling drives sharper and more sustained sales than end-of-aisle displays. ... After all, marketers spend more than $2 ...