Because segments are applied before sampling, segmented data will not be sampled?

Segments in Google Analytics are indeed powerful tools that allow you to isolate and analyze specific subsets of your data. When working with sampled data in Google Analytics, it’s important to understand how segments interact with that sampling process.

The statement "segmented data will not be sampled" is false because segments are applied after the initial data is retrieved from Google's servers. In the context of sampled data, Google Analytics first applies sampling to the overall dataset. This means that when you apply a segment to data that is already sampled, the segment is applied to the sampled data, which can lead to additional sampling based on the subset of data you're analyzing.

Therefore, it's important for users to be aware that applying segments does not negate the sampling process. In some cases, this might lead to unexpected results if users expect segmented data to be derived from the complete dataset, not just from the sampled portion. As a result, the correct answer points out that segments do not prevent data from being sampled; they function within the constraints of whatever data has already been sampled.