Question

To determine customer opinion of their musical varietymusical variety​, sonysony randomly selects 140140 concertsconcerts during a certain week and surveys all concert goersconcert goers.

Answer 1

A data sample is a set of data collected and/or selected from a statistical population by a defined procedure, in statistics and quantitative research methodology. the elements of a sample are known as sample points, sampling units or observations. Cluster sample is a simple random sample of groups, or clusters, of the population often based on geography. In this case, this is a type of cluster sample.