How do astronomers use sampling statistic techniques in their research?
Astronomers use two different sampling designs depending on the population being studied. If the population is finite in size, such as a cluster of stars or the HDFs, simple random sampling is chosen. If the population is very large and considered infinite, then more complex designs are used, depending on the characteristics of the population and the property being studied. Active galactic nuclei and halo stars are two populations that are considered infinite.